Kenttämaa Labs

Analytical & Physical Organic Chemistry

Publications

2022

“Spin-spin Coupling Controls the Gas-phase Reactivity of Aromatic σ-Type Triradicals”, D. Ding, E. Feng, R.R. Kotha, N.C. Chapman, H. Jiang, J.J. Nash, H.I. Kenttämaa, Chem. Eur. J. 28 (2022) 1 - 13 (http://dx.doi.org/10.1002/chem.202102968).

 

2021

“Fast Determination of the Lignin Monomer Compositions of Genetic Variants of Poplar via Fast Pyrolysis/Atmospheric Pressure Chemical Ionization Mass Spectrometry”, L. Xu, X. Ma, P. Murria, A. Talpade, H. Sheng, R. Meilan, C. Chapple, R. Agrawal, W.N. Delgass, F.H. Ribeiro, H.I. Kenttämaa, J. Am. Soc. Mass Spectrom 32 (2021) 2546–2551 (https://doi.org/10.1021/jasms.1c00186).

“Determination of the Compound Class and Functional Groups in Protonated Analytes via Diagnostic Gas-phase Ion-molecule Reactions”, J.K. Liu, E. Niyonsaba, K.Z. Alzarieni, V.M. Boulos, R. Yerabolu, H.I. Kenttämaa, Mass Spectrom. Rev. (2021) 1– 27 (https://doi.org/10.1002/mas.21727).

“Precise Measurement of the Flash Point and Hydrocarbon Composition of Jet A Fuel”, B.A. Modereger, S.E. Nowling, W.T.J. Zhang, M.L. Jones, N. Chapman, Y. Cheng, P. Vozka, M.E. Peretich, H.I. Kenttämaa, G. Kilaz, Fuel 305 (2021) 121399-121412 (https://doi.org/10.1016/j.fuel.2021.121399).

“Reactivity of a para-Benzyne Analog in Solution and in the Gas Phase”, C. Jin, E. Feng, X. Ma, W. Tang, H. Sheng, A.M. Wittrig, J. Gao, H.I. Kenttämaa, Tetrahedron Lett. 74 (2021) 153161-153164.

“A Study on the Gas-phase Reactivity of Charged Pyridynes” J.R. Milton, B.J. Jankiewicz, J.P. Max, N.R. Vinueza, L.M. Kirkpatrick, K. Campbell, V.A. Gallardo, J.N. Reece, H.I. Kenttämaa, J. Org. Chem. 86 (2021) 9979-9993 (https://doi.org/10.1021/acs.joc.1c00618).

“Thermochemical Interaction of Biofuel Impurities with Yttria-Stabilized Zirconia Thermal Barrier Coatings”, J.H. Ramirez Velasco, K. Petrosky, G. Kilaz, H.I. Kenttämaa, R.W. Trice, Ceramics International 47 (2021) 24675-24682.

“Evaluation of Process Severity on the Chemical Composition of Organosolv Switchgrass Lignins by Using Mass Spectrometry”, J. Zhang, Y. Jiang, A. Astner, H. Zhu, J.J. Bozell, and H.I. Kenttämaa, Green Chem. 23 (2021) 4024–4033 (DOI: 10.1039/D1GC00569C).

“The Distillation Precipitation Fractionation Mass Spectrometry (DPF-MS) Method for Molecular Profiling of Crude Oil”, K.Z. Alzarieni, H.I. Kenttämaa, invited book chapter for “Chemistry of Crude Oil and Petroleum Products”, Ed. Merv Fingas, accepted to be published by De Gruyter, June 2022.

“Characterization of Protonated Substituted Ureas by Using Diagnostic Gas-Phase Ion Molecule Reactions Followed by Collision-Activated Dissociation in Tandem Mass Spectrometry Experiments”, E. Feng, X. Ma, H.I. Kenttämaa, Anal. Chem. 93 (2021) 7851-7859 (DOI:10.1021/acs.analchem.1c00326).

“Characterization of Ionized Lignin Model Compounds with α-O-4 Linkages by Positive and Negative Ion Mode ESI/Tandem Mass Spectrometry Based on CAD”, H. Sheng, W. Tang, J. Gao, J. Riedeman, M. Hurt, L. Yang, H.I. Kenttämaa, Rapid Commun. Mass Spectrom. 35 (2021) e9057 (11 pages) (doi.org/10.1002/rcm.9057).

“Identification of Carboxylic Acid Functionalities in Protonated Drug Metabolites by Using Tandem Mass Spectrometry Based on Ion-molecule Reactions Coupled with High Performance Liquid Chromatography”, K. Alzarieni, J.P. Max, M. Easton, J.R. Milton, X. Ma, X. Dong, C. Gu, H.I. Kenttämaa, Int. J. Mass Spectrom. 463 (2021) 116551-116561 (invited for an honor issue for Paul Kebarle).

“Modulating the Radical Reactivity of Phenyl Radicals with the Help of Distonic Charges: Is it All in the Electrostatics”? T. Mondal, S. Shaik, H. Kenttämaa, T. Stuyver, Chem. Sci. 12 (2021) 4800-4809 (doi.org/10.1039/D0SC07111K).

“Determination of the Chemical Composition of Condensate-like Oils with Different API Gravities by Using the Distillation, Precipitation, Fractionation Mass Spectrometry (DPF MS) Method”, K.Z. Alzarieni, E. Niyonsaba, Y. Zhang, K.E. Wehde, C. Johnston, G. Kilaz, H.I. Kenttämaa, Energy Fuels 35 (2021) 8646–8656 (https://doi.org/10.1021/ acs.energyfuels.0c04286).

“Protonated Ground-state Singlet meta-Pyridynes React from an Excited Triplet State”, X. Ma,#  E. Feng,#  H. Jiang, V.M. Boulos, J. Gao, J.J. Nash, H.I. Kenttämaa, J. Org. Chem. 86 (2021) 3249-3260 (doi.org/10.1021/acs.joc.0c02594).

“Compositional Analysis of Organosolv Poplar Lignin by Using High-Performance Liquid Chromatography/High-resolution Multi-stage Tandem Mass Spectrometry”, J. Zhang, Y. Jiang, L.F. Easterling, A. Astner, W. Li, K.Z. Alzarieni, X. Dong, J. Bozell, H.I. Kenttämaa, Green Chem. 23 (2021) 983-1000 (doi.org/10.1039/D0GC03398G).

 

2020

“Comparison of Three Different Analytical Protocols for 2019 Updated D2425 Method for Renewable Jet Fuel Product Certification Analysis”, K.E. Ikonen, K.E. Wehde, F. Anyakudo, H.I. Kenttämaa, J. Chrom. A 1634 (2020) 461667-461674 (doi.org/10.1016/j.chroma.2020.461667)

“The Effects of Analyte Concentration on the Protonation Sites of 4-Aminobenzoic Acid Upon Atmospheric Pressure Chemical Ionization as Revealed by Gas-phase Ion-molecule Reactions”, R. Kumar, H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 31 (2020) 2210-2217 (https:/doi.org/10.1021/jasms.0c00285).

“Probing the Fragmentation Mechanisms of Deprotonated Lignin Model Compounds in Tandem Mass Spectrometry by Using Deuterium Labeling, Synthesis of Authentic Compounds, and Quantum Chemical Calculations”, J. Zhang, E. Feng, W. Li, H. Sheng, J.R. Milton, L.F. Easterling, J.J. Nash, H.I. Kenttämaa, Anal. Chem. 92 (2020) 11895−11903 (https://doi. org/10.1021/acs.analchem.0c02275).

“Free Radical Mediated Glycan Isomer Differentiation”, K. Fabijanczuk, K. Gaspar, X. Dong, R. Murtada, K. Calix, E. Manriquez, R.M. Bakestani, K.Z. Alzarieni, H.I. Kenttämaa, J. Gao, Anal. Chem. 92 (2020) 13794-13802 (https://doi.org/10.1021/acs.analchem.0c02213).

“Losses of CO and CO2 upon Collision-Activated Dissociation of Substituted 2-Methoxy phenoxides After Methyl Radical Loss”, C.L. Marcum, J.S. Riedeman, T.M. Jarrell, J.J. Nash, H.I. Kenttämaa, Int. J. Mass Spectrom. 456 (2020) 116397-116401 (https://doi.org/10.1016/j.ijms.2020.116397).

“Graph Based Machine Learning Interprets Diagnostic Isomer-selective Ion-Molecule Reactions in Tandem Mass Spectrometry”, J. Fine, J.K.Y. Liu, A. Beck, K.Z. Alzarieni, X. Ma, V.M. Boulos, H.I. Kenttämaa, G. Chopra, ChemRxiv, 2019; Chem. Sci. 40 (2020)11849-11858 (https://doi.org/10.1039/D0SC02530E).

“Effects of the Distance Between Radical Sites on the Reactivities of Aromatic Biradicals”, D. Ding, H. Jiang, X. Ma, J.J. Nash, H.I. Kenttämaa, J. Org. Chem. 85 (2020) 8415–8428 (https://doi.org/10.1021/acs.joc.0c00658).

“Analyzing and Tuning the Chalcogen-Amine-Thiol Complexes for Tailoring of Chalcogenide Syntheses”, D.D. Swapnil, L.F. Easterling, J.M. Manheim, N.J. LiBretto, K.G. Weideman, J.T. Miller, H.I. Kenttämaa, R. Agrawal, Inorg. Chem. 59 (2020) 8240–8250 (https://doi.org/10.1021/acs.inorgchem.0c00597).

“Direct Functionalization of C-H Bonds by Electrophilic Anions”, J. Warneke, M. Mayer, M. Rohdenburg, X. Ma, J.K.Y. Liu, M. Grellmann, S. Debnath, V.A. Azov, E. Aprá, R.P. Young, C. Jenne,  H.I. Kenttämaa, K.R. Asmis, J. Laskin, PNAS  117 (202023374-23379 (https://doi.org/10.1073/pnas.2004432117).

“Fragmentation of Saturated Hydrocarbons Upon Atmospheric Pressure Chemical Ionization Is Caused by Proton-transfer Reactions”, J.M. Manheim, J.R. Milton, Y. Zhang and H.I.Kenttämaa, Anal. Chem. 92 (2020) 8883–8892 (http://dx.doi.org/10.1021/acs.analchem.0c00681).

“Measurement of the Proton Affinities of a Series of Mono- and Biradicals of Pyridine”, R. Kumar, G. Li, V.A. Gallardo, J. Milton, A. Li, J.J. Nash, H.I. Kenttämaa, J. Am. Chem. Soc. 142 (2020) 8679–8687 (https://doi.org/10.1021/jacs.0c00202).

“Factors Affecting the Limit of Detection for HPLC/Tandem Mass Spectrometry Experiments Based on Gas-phase Ion-Molecule Reactions”, L.F. Easterling, R. Yerabolu, R. Kumar, K.Z. Alzarieni, R. Kotha, H.I. Kenttämaa, Anal. Chem. 92 (2020) 7471-7477 (https://doi.org/10.1021/acs.analchem.9b05369).

“Effects of Residual Water in a Linear Quadrupole Ion Trap on the Protonation Sites of 4-Aminobenzoic Acid”, R. Kumar, R. Yerabolu, J.Y. Kong, H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 31 (2020) 124-131 (http://dx.doi.org/10.1021/jasms.9b00001).

“Bias, Limit of Detection, and Limit of Quantitation for the ASTM D2425 Method Updated in 2019”, K.E. Ikonen, K.E. Wehde, K. Habeb, H.I. Kenttämaa, J. Chrom. A 1614 (2020) 460705-460713 (https://doi.org/10.1016/j.chroma.2019.460705).

 

2019

“Integration of a Multichannel Pulsed-Valve Inlet System to a Linear Quadrupole Ion Trap Mass Spectrometer for the Rapid Consecutive Introduction of Multiple Reagents for Diagnostic Ion/Molecule Reactions”, J. Kong, R.T. Hilger, C. Jin, R. Yerabolu, J.R. Zimmerman, R.W. Replogle, T.M. Jarrell, L. Easterling, R. Kumar, H.I. Kenttämaa, Anal. Chem. 91 (2019) 15652-15660 (10.1021/acs.analchem.9b03768).

“Exploring the Reaction Mechanisms of Fast Pyrolysis of Xylan Model Compounds via Tandem Mass Spectrometry and Quantum Chemical Calculations”, Z.J. Yu, P. Murria, M.W. Easton, J.C. Degenstein, H. Zhu, L. Xu, R. Agrawal, W.N. Delgass, F.H. Ribeiro, H.I. Kenttämaa, J. Phys. Chem. A  123 (2019) 9149-9157 (DOI: 10.1021/acs.jpca.9b04438).

“Distinguishing Isomeric Aromatic Radical Cations by Using Energy-resolved Linear Quadrupole Ion Trap and Medium Energy Collision-activated Dissociation (ER-MCAD) Mass Spectrometry”, M. Romanczyk, Y. Zhang, M. Easton, W. Li, J. Viidanoja, H.I. Kenttӓmaa, J. Am. Soc. Mass Spectrom. 31 (2019) 58-65 (http://dx.doi.org/10.1021/jasms.9b00029).

“Identification and Quantitation of Linear Alkanes in Lubricant Base Oils by Using GC×GC/EI TOF Mass Spectrometry”, J. Manheim, K. Wehde, W.T.J. Zhang, P. Vozka, M. Romanczyk, G. Kilaz, H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 30 (2019) 2670-2677 (DOI: 10.1007/s13361-019-02336-x).

“An Automated Method for Chemical Composition Analysis of Lubricant Base Oils by Using Atmospheric Pressure Chemical Ionization Mass Spectrometry”, J. Manheim, Y. Zhang, J. Viidanoja, H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 30 (2019) 2014-2021 (DOI: 10.1007/s13361-019-02284-6).

“Differentiation of Deprotonated Acyl, N- and O-Glucuronide Drug Metabolites by Using Tandem Mass Spectrometry Based on Gas-Phase Ion-Molecule Reactions”, E. Niyonsaba, M.W. Easton, E. Feng, Z. Yu, Z. Zhang, H. Sheng, J. Kong, L.F. Easterling, J. Milton, H.R. Chobanian, N.R. Deprez, M.T. Cancilla, G. Kilaz, H.I. Kenttämaa, Anal. Chem. 91 (2019) 11388-11396 (http://dx.doi.org/10.1021/acs.analchem.9b02717).

“Determination of the Chemical Compositions of Heavy, Medium, and Light Crude Oils by Using the Distillation, Precipitation, Fractionation Mass Spectrometry (DPF MS) Method”, E.  Niyonsaba, K.E. Wehde, R. Yerabolu, G. Kilaz, H.I. Kenttämaa, Fuel 255 (2019) 115852-115859.

“Identification of Protonated Primary Carbamates by Using Gas-Phase Ion-Molecule Reactions in Tandem Mass Spectrometry Experiments”, E. Niyonsaba, M.W. Easton, J.K.Y. Liu, Z. Yu, H. Sheng, J.Y. Kong, Z. Zhang, L.F. Easterling, J. Milton, H.I. Kenttämaa, Org. Proc. Res. Develop. 23 (2019) 1159-1166 (DOI: 10.1021/acs.oprd.9b00080).

“Molecular-Level Understanding of the Major Fragmentation Mechanisms of Cellulose Fast Pyrolysis: An Experimental Approach Based on Isotopically Labeled Model Compounds”, Z.J. Yu, M.W. Easton, P. Murria, L. Xu, D. Ding, Y. Jiang, J. Zhang, and H.I. Kenttämaa, J. Org. Chem. 84 (2019) 7037-7050 (http://dx.doi.org/10.1021/acs.joc.9b00723).

“Quinoline Triradicals: A Reactivity Study”, R.R. Kotha, R. Yerabolu, M.S. Aqueel, J.S. Riedeman, L. Szalwinski, D. Ding, J.J. Nash, and H.I. Kenttämaa, J. Am. Chem. Soc. 141 (2019) 6672-6679 (DOI: 10.1021/jacs.9b01740).

“Laser-induced Acoustic Desorption: Fundamental Aspects, Experimental Methods, Applications and Prospects”, X. Ma, Y. Zhang, H.-R. Lei, and H.I. Kenttämaa, MRS Bulletin 44 (2019) 372-381 (invited mini-review) (https://doi.org/10.1557/mrs.2019.105).

“Relative Reactivities of Three Isomeric Aromatic Biradicals with a 1,4-Biradical Topology Are Controlled by Polar Effects”, X. Ma, C. Jin, D. Wang, J.J. Nash, and H.I. Kenttämaa, Chem. Eur. J. 25 (2019) 6355-6361 (http://dx.doi.org/10.1002/chem.201806106).

“Investigation of the Relative Abundances of Single-core and Multicore Compounds in Asphaltenes by Using High-resolution In-Source Collision-activated Dissociation and Medium-energy Collision-activated Dissociation Mass Spectrometry with Statistical Considerations”, X. Dong, Y. Zhang, J. Milton, R. Yerabolu, L. Easterling, H.I. Kenttämaa, Fuel 246 (2019) 126-132 (DOI: 10.1016.j.fuel.2019.02.080).

“Spin-spin Coupling Between Two meta-Benzyne Moieties In a Quinolinium Tetraradical Cation Enhances Their Reactivities”, R.R. Kotha, R. Yerabolu, D. Ding, L. Szalwinski, X. Ma, A. Wittrig, J. Kong, J.J. Nash, and H.I. Kenttämaa, Chem. Eur. J. 25 (2019) 4472-4477 (DOI:10.1002/chem.201806096).

“Application of Biofuel Impurities and Effect on the Hot Corrosion of Yttria-Stabilized Zirconia Thermal Barrier Coatings”, J.H. Ramirez Velasco, G. Kilaz, H.I. Kenttämaa, R.W. Trice, Surf. Coat. Tech. 358 (2019) 340-346.

“Jet Fuel Density via GC×GC-FID”, P. Vozka, B.A. Modereger, A.C. Park, W.T.J. Zhang, R.W. Trice, H.I. Kenttämaa, G. Kilaz, Fuel 235 (2019) 1052-1060 (DOI: 10.1016/j.fuel.2018.08.110).

“Reactivity of σ,σ,σ,σ,σ-Pentaradicals”, J.P. Max, X. Ma, R.R. Kotha, D. Ding, J. Milton, J.J. Nash, H.I. Kenttämaa, Int. J. Mass Spectrom. 435 (2019) 280-290 (DOI: 10.1016/j.ijms.2018.10.026).

“Recent Advances in Petroleum Analysis by Mass Spectrometry”, E. Niyonsaba, J.M. Manheim, R. Yerabolu, H.I. Kenttämaa, Anal. Chem. 91 (2019) 156−177 (invited review) (DOI: 10.1021/acs. analchem.8b05258).

“Gas Phase Fragmentation of Adducts Between O2 and closo-Borate Anion Radicals”, J. Warneke, M. Rohdenburg, J.K. Liu, E. Johnson, X. Ma, R. Kumar, P. Su, E. Aprà, X. Wang, C. Jenne, A. Himmelspach, S.Z. Konieczka, M. Finze, H.I. Kenttämaa, J. Laskin, Int. J. Mass Spectrom. 436 (2019) 71-78.

“The Capability of Organic Compounds to Swell Acrylonitrile Butadiene O-rings and Their Effects on O-ring Mechanical Properties”, M. Romanczyk, J.R. Velasco, L. Xu, P. Vozka, P. Dissanayake, K. Wehde, N. Roe, E. Keating, G. Kilaz, R.W. Trice, D.J. Luning Prak, H.I. Kenttӓmaa, Fuel 238 (2019) 483-492 (DOI: 10.1016/j.fuel.2018.10.103).

 

2018

"Substituent Effects on the Reactivity of the 2,4,6-Tridehydropyridinium Cation, an Aromatic σ,σ,σ-Triradical”, J. Gao, B.J. Jankiewicz, H. Sheng, L. Kirkpatrick, X. Ma, J.J. Nash, H.I. Kenttämaa, Eur. J. Org. Chem. (2018) 6582-6589 (DOI: 10.1002/ejoc.201801249).

“Dehydration Pathways for Glucose and Cellobiose During Fast Pyrolysis", M. Mckay, J. Nash, H.I. Kenttämaa, J. Phys. Chem. A 122 (2018) 8071–8085 (DOI: 10.1021/acs.jpca.8b02312).

"Polar Effects Control the Gas-phase Reactivity of para-Benzyne Analogs", H. Sheng, X. Ma, H.-R. Lei, J. Milton, W. Tang, C. Jin, J. Gao, A. Wittrig, E. Archibold, J.J. Nash, H.I. Kenttämaa, Chem. Phys. Chem. 20 (2018) 21567-21572 (DOI: 10.1039/c8cp03350a).

“Effects of Hydrogen Bonding on the Gas-phase Reactivity of Didehydroisoquinolinium Cation Isomers”, N.R. Vinueza, B.J. Jankiewicz, V.A. Gallardo, J.J. Nash, H.I. Kenttämaa, Phys. Chem. Chem. Phys. 20 (2018) 21567 - 21572 (DOI: 10.1039/C8CP03350A). 

“Differentiating Isomeric Deprotonated Glucuronide Drug Metabolites via Ion/Molecule Reactions in Tandem Mass Spectrometry”, J.Y. Kong, Z. Yu, M.W. Easton, E. Niyonsaba, X. Ma, R. Yerabolu, H. Sheng, T.M. Jarrell, Z. Zhang, A.K. Ghosh, H.I. Kenttämaa, Anal. Chem. 90 (2018) 9426-9433 (DOI: 10.1021/acs.analchem.8b02083).

“Molecular Profiling of Crude Oil by Using Distillation Precipitation Fractionation Mass Spectrometry (DPF-MS)”, R. Yerabolu, R. Kotha, E. Niyonsaba, X. Dong, J.M. Manheim, J. Kong, J.S. Riedeman, J. Milton, C.T. Johnston, G. Kilaz, H.I. Kenttämaa, Fuel 234 (2018) 492-501.

“Renewable Thermosets Based on Lignin and Carbohydrate Derived Monomers”, Y. Jiang, D. Ding, S. Zhao, H. Zhu, H.I. Kenttämaa, M.M. Abu-Omar, Green Chem. 20 (2018) 1131-1138 (DOI: 10.1039/C7GC03552G).

“Tandem Mass Spectrometric Evaluation of Core Structures of Aromatic Compounds After Catalytic Deoxygenation”, X. Fan, G. Li, X. Dong, J. Jiang, X. Wei, H.I. Kenttämaa, Fuel Proc. Technol. 176 (2018) 119-123.

“Ion/Molecule Reactions of Dimethylamine with Protonated Analytes Facilitate the Identification of Tertiary N-Oxide Functionalities in a Linear Quadrupole Ion Trap Mass Spectrometer”, J.S. Riedeman, T.M. Jarrell, C. Jin, H. Sheng, R. Yerabolu, J. Kong, and H.I. Kenttämaa, Int. J. Mass Spectrom. 429 (2018) 142-150 (DOI: 10.1016/j.ijms.2017.07.020).

 

2017

"Analysis of Catalytic Hydrothermal Conversion Jet Fuel and Surrogate Mixture Formulation: Components, Properties, and Combustion", D.J. Luning Prak, M. Romanczyk, K.E. Wehde, S. Ye, M. McLaughlin, P.J. Luning Prak, M. Foley, H.I. Kenttӓmaa, G. Kilaz, P.C. Trulove, L. Xu, J.S. Cowart, Energy & Fuels 31 (2017) 13802-13814 (DOI: 10.1021/acs.energyfuels.7b02960).

"(−)ESI/CAD MSn Procedure for Sequencing Lignin Oligomers Based on a Study of Synthetic Model Compounds with β-O-4 and 5-5 Linkages", H. Sheng, W. Tang, G. Li, J. Riedeman, T. Jarrell, M. Hurt, L. Yang, X. Ma, J.Nash and H.I. Kenttämaa, Anal. Chem. 89 (2017) 13089-13096 (DOI: 10.1021/acs.analchem.7b01911).

"Speciation of CuCl and CuCl2 Thiol-Amine Solutions and Characterization of Resulting Films: Implications for Semiconductor Device Fabrication", P. Murria, C.K. Miskin, R. Boyne, L.T. Cain, R. Yerabolu, R. Zhang, E.C. Wegener, J.T. Miller, H.I. Kenttämaa, R. Agrawal, Inorg Chem. 56 (2017) 14396-14407 (DOI: 10.1021/acs.inorgchem.7b01359).

"Identification of Protonated Sulfone and Aromatic Carboxylic Acid Functionalities in Organic Molecules by Using Ion-Molecule Reactions Followed by Collisionally Activated Dissociation in a Linear Quadrupole Ion Trap Mass Spectrometer", R. Yerabolu, J. Kong, M. Easton, R. Kotha, J. Max, H. Sheng, M. Zhang, C. Gu, and H.I. Kenttämaa, Anal. Chem. 89 (2017) 7398-7405 (DOI: 10.1021/acs.analchem.7b00817).

"Laser-Induced Acoustic Desorption/Electron Ionization of Amino Acids and Small Peptides", T.M. Jarrell, B.C. Owen, J.S. Riedeman, B.M. Prentice, C.J. Pulliam, J. Max, H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 28 (2017) 1091-1098 (DOI: 10.1007/s13361-017-1684-1).

"Gas-phase Reactivity of meta-Benzyne Analogs Toward Small Oligonucleotides of Differing Lengths", F. Widjaja, J. Max, Z. Jin, J.J. Nash and H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 28 (2017) 1392-1405 (DOI: 10.1007/s13361-017-1655-6).

"Mechanism of Me-Re Bond Addition to Platinum(II) and Dioxygen Activation by the Resulting Pt-Re Bimetallic Center", K. Pichaandi, L. Kabalan, H. Amini, G. Zhang, H. Zhu, H. Kenttämaa, P. Fanwick, J. Miller, S. Kais, M. Nabavizadeh, M. Rashidi, M. Abu-Omar, Inorg. Chem. 56 (2017) 2145-2152 (DOI: 10.1021/acs.inorgchem.6b02801).

“Initial Products and Reaction Mechanisms for Fast Pyrolysis of Synthetic G-Lignin Oligomers with β-O-4 linkages via On-Line Mass Spectrometry and Quantum Chemical Calculations", H. Sheng, J.C. Degenstein, P. Murria, W. Tang, J.S. Riedeman, M.R. Hurt, A. Dow, I. Klein, J.J. Nash, R. Agrawal, W.N. Delgass, F.H. Ribeiro, M. Abu-Omar, H.I. Kenttämaa, Chem. Select 2 (2017) 7185-7193.

“An Oxygen-Peribridged Quinolinium Cation and Its Monoradical Counterpart”, R.R. Kotha, J.J. Nash, H.I. Kenttämaa, Eur. J. Org. Chem. 2017 (2017) 1407-1412.

"Identification of Carboxylate, Phosphate, and Phenoxide Functionalities in Deprotonated Molecules Related to Drug Metabolites via Ion-Molecule Reactions with Water and Diethylhydroxyborane", H. Zhu, X. Ma, J.Y. Kong, M. Zhang, H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 28 (2017) 2189-2200 (DOI: 10.1007/s13361-017-1713-0).

 

2016

“Maleic Acid and Aluminum Chloride Catalyzed Conversion of Glucose and Fructose to 5-(Hydroxymethyl)furfural and Levulinic Acid in Aqueous Media”, X. Zhang, P. Murria, Y. Jiang, W. Xiao, H.I. Kenttämaa, M.M. Abu-Omar, N.S. Mosier, Green Chem. 18 (2016) 5219-5229 (DOI: 10.1039/C6GC01395C).

"Identification of the Phenol Functionality in Deprotonated Monomeric and Dimeric Lignin Degradation Products via Tandem Mass Spectrometry Based on Ion-Molecule Reactions with Diethylmethoxyborane",H. Zhu, T.M. Jarrell, N. Louden, J.P. Max, C.L. Marcum, H. Luo, J.S. Riedeman, M.M. Abu-Omar, H.I. Kenttämaa, J. Am. Soc. for Mass Spectrom. 27 (2016) 1813-1823 (DOI: 10.1007/s13361-016-1442-9).

“Reactivity Controlling Factors for an Aromatic Carbon-centered σ,σ,σ-Triradical:  the 4,5,8-Tridehydroisoquinolinium Cation”, N.R. Vinueza, B.J. Jankiewicz, V.A. Gallardo, G.Z. LaFavers, D. Desutter, J.J. Nash, H.I. Kenttämaa, Chem. Eur. J. 22 (2016) 809-815 (DOI: 10.1002/chem.201502502).

“Characterization of Asphaltene Deposits by Using Tandem Mass Spectrometry and Raman Spectroscopy”, J.S. Riedeman, N.R. Kadasala, A. Wei, H.I. Kenttämaa, Energy Fuels 30 (2016) 805–809 (DOI: 10.1021/acs.joc.5b02409).

“Mechanistic Investigations Into the Pd/C and Zn+2 Catalyzed Cleavage and Hydrodeoxygenation of Lignin”, I. Klein, C. Marcum, H.I. Kenttämaa and M.M. Abu-Omar, Green Chem. 18 (2016) 2399-2405; Advance Article; (DOI: 10.1039/C5GC01325A).

“Identification of N-Oxide and Sulfoxide Functionalities in Protonated Drug Metabolites by Using Ion-molecule Reactions in a Linear Quadrupole Ion Trap Mass Spectrometer”, H. Sheng, W. Tang, J.S. Riedeman, R. Yerabolu, J. Max, R.R. Kotha, John J. Nash, M. Zhang, H.I. Kenttämaa, J. Org. Chem. 81 (2016) 575-586 (DOI: 10.1021/acs.joc.5b02409).

“Characterization of Aromatic Organosulfur Model Compounds Relevant to Fossil Fuels by Using APCI/CS2 and High-resolution Tandem Mass Spectrometry”, W. Tang, H. Sheng, C. Jin, J.S. Riedeman, H.I. Kenttämaa, Rapid Commun. Mass Spectrom. 30 (2016) 953–962.

“Gas-phase Ion/Molecule Reactions for the Identification of Sulfone Functionalities in Protonated Analytes in a Linear Quadrupole Ion Trap Mass Spectrometer”, W. Tang, H. Sheng, J. Kong, R. Yerabolu, H. Zhu, M. Zhang, H.I. Kenttämaa, Rapid Commun. Mass Spectrom. 30 (2016) 1435-1441 (DOI: 10.1002/rcm.7569).

"Total Utilization of Miscanthus Biomass, Lignin and Carbohydrates: Using Earth Abundant Nickel Catalyst", H. Luo, I. Klein, Y. Jiang, H. Zhu, B. Liu, H.I. Kenttämaa, M. Abu-Omar, ACS Sus. Chem. Eng. 4 (2016) 2316-2322 (DOI: 10.1021/acssuschemeng.5b01776) (featured in ACS Editors’ Choice).

“Comparison of Atmospheric Pressure Chemical Ionization and Field Ionization Mass Spectrometry for the Analysis of Large Saturated Hydrocarbons”, C. Jin, J. Viidanoja, M. Li, Y. Zhang, E. Ikonen, A. Root, M. Romanczyk, J. Manheim, E. Dziekonski, H.I. Kenttämaa, Anal. Chem. 88 (2016) 10592–10598.

“A Fundamental MSn Study of Collision-Activated Dissociation of Small Deprotonated Molecules Related to Lignin”, C.L. Marcum, T.M. Jarrell, H. Zhu, B.C. Owen, L. Haupert, M. Easton, O. Hosseinaei, J. Bozell, J.J. Nash, H.I. Kenttämaa, ChemSusChem 9 (2016) 3513-3526.

"Alkali Cation Chelation in Cold β-O-4 Tetralignol Complexes", A. DeBlase, E. Dziekonski, J. Hopkins, N. Burke, H. Sheng, H. Kenttämaa, S. McLuckey and T. Zwier, J. Phys. Chem. 120 (2016) 7152-7166.

 

2015

“Structural Comparison of Asphaltenes of Different Origins by Using Multiple-stage Tandem Mass Spectrometry”, W. Tang, M.R. Hurt, H. Sheng, J. Riedeman, D.J. Borton, P. Slater, H.I. Kenttämaa, Energy Fuels 29 (2015) 1309-1314.

“Gas-Phase Reactions of a Novel Chemical Ionization Reagent, ClMn2+, with Polar and Nonpolar Analytes in a Linear Quadrupole Ion Trap”, T. Jarrell, J. Riedeman, H.I. Kenttämaa, Int. J. Mass Spectrom. 378 (2015) 206-211.

“Polar Effects Control the Gas-phase Reactivity of Charged para-Benzyne Analogs”, A.M. Wittrig, E.F. Archibold, H. Sheng, J.J. Nash, H.I. Kenttämaa, Int. J. Mass Spectrom. 377 (2015) 39-43.

“Tandem Mass Spectrometric Characterization of Conversion of Xylose to Furfural”, N. Vinueza, E.S. Kim, V.A. Gallardo, N.S. Mosier, M.M. Abu-Omar, N.C. Carpita and H.I. Kenttämaa, Biomass Bioenergy 74 (2015) 1–5.

Fast Pyrolysis of 13C-Labeled Cellobioses: Gaining Insights Into the Mechanisms of Fast Pyrolysis of Carbohydrates”, J.C. Degenstein, P. Murria, M. Easton, H. Sheng, M. Hurt, A.R. Dow, J. Gao, J. Nash, R. Agrawal, W.N. Delgass, F.H. Ribeiro and H.I. Kenttämaa, J. Org. Chem. 80 (2015) 1909-1914.

“A Synergistic Biorefinery Based on Catalytic Conversion of Lignin First from Lignocellulosic Biomass”, T. Parsell, S. Yohe, J. Degenstein, T. Jarrell, I. Klein, E. Gencer, B. Hevenston, M. Hurt, J. Kim, H. Choudhari, B. Saha, R. Meilan, N. Mosier, F. Ribeiro, W.N. Delgass, C. Chapple, H.I. Kenttämaa, R. Agrawal and M. Abu-Omar, Green Chem. 17 (2015) 1492-1499.

”Identification of 2-Aminothiazolobenzazepine Metabolites in Human, Rat, Dog and Monkey Microsomes by Ion/molecule Reactions in Linear Quadrupole Ion Trap Mass Spectrometry”, M. Zhang, R. Eismin, H. Kenttämaa, H. Xiong, Y. Wu, D.Burdette and R. Urbanek, Drug Metabolism and Disposition 43 (2015) 358-366.

“Mass Spectrometric Identification of the N-Monosubstituted N-HydroxylaminoFunctionality in Protonated Analytes via Ion/molecule Reactions in Tandem Mass Pectrometry”, H. Sheng, W. Tang, R. Yerabolu, J.Y. Kong, P.E. Williams, M. Zhang and H.I. Kenttämaa, Rapid Commun. Mass Spectrom. 29 (2015) 730-734.

“A Mimivirus Enzyme That Participates in Viral Entry”, T. Klose, D.A. Herbst, H. Zhu, J.P. Max, H.I. Kenttämaa and M.G. Rossmann, Structure 23 (2015) 1058-1065.

“Speciation and Kinetic Study of Iron Promoted Sugar Conversion to 5-Hydroxy-methylfurfural (HMF) and Levulinic Acid“, Y. Jiang, L. Yang, C.M. Bohn, G. Li, D. Han, N.S. Mosier, J.T. Miller, H.I. Kenttämaa and M.M. Abu-Omar, Org. Chem. Frontiers 2, (2015) 1388-1396.

“Mass Spectrometric Studies of Fast Pyrolysis of Cellulose”, J.C. Degenstein, M. Hurt, P. Murria, M. Easton, L. Yang, H. Choudhari, J. Riedeman, M. Carlsen, J. Nash, R. Agrawal, W.N. Delgass, F.H. Ribeiro and H.I. Kenttämaa, Eur. J. Mass Spectrom. 21 (2015) 321-326 (invited paper) http://dx.doi.org/10.1255/ejms.1335.

 

2014

“From Furfural to Fuel: Synthesis of Furoins by Organocatalysis and Their Hydrodeoxygenation by Cascade Catalysis”, B.L. Wegenhart, L. Yang, S.C. Kwan, R. Harris, H.I. Kenttämaa and M.M. Abu-Omar, ChemSusChem. 7 (2014) 2742-2747

“Identification of the Sulfoxide Functionality in Protonated Analytes via Ion/ molecule Reactions in Linear Quadrupole Ion Trap Mass Spectrometer”, H. Sheng, P.E. Williams, W. Tang, M. Zhang, H.I. Kenttämaa, Analyst 139 (2014) 4296-4302.

“Multi-Ported Pulsed Valve Interface for a Linear Quadrupole Ion Trap Mass Spectrometer to Enable Rapid Screening of Multiple Functional-Group Selective Ion-Molecule Reactions”, T. Jarrell, J. Riedeman, M. Carlsen, R. Replogle, T.  Selby, H.I. Kenttämaa, Anal. Chem. 86 (2014) 6533-6539

“Identification of the Sulfone Functionality in Protonated Analytes via Ion/molecule Reactions in a Linear Quadrupole Ion Trap Mass Spectrometer”, H. Sheng, P. Williams, W. Tang, J. Riedeman, M. Zhang, H.I. Kenttämaa, J. Org. Chem. 79 (2014) 2883-2889.

“Characterization of Organosolv Switchgrass Lignin by Using High Performance Liquid Chromatography/High Resolution Tandem Mass Spectrometry Using Hydroxide-Doped Negative-Ion Mode Electrospray Ionization”, T.M. Jarrell, C.L. Marcum, H. Sheng, B.C. Owen, J.J. Bozell, and H.I. Kenttämaa, Green Chem. 16 (2014) 2713-2727.

“Elucidation of Structural Information Achievable for Asphaltenes via Collision- Activated Dissociation of Their Molecular Ions in MSn Experiments: A Model Compound Study”, T.M. Jarrell, C. Jin, J.S. Riedeman, B.C. Owen, X. Tan, A. Scherer, R. Tykwinski, M. Gray, P. Slater, H.I. Kenttämaa, Fuel 133 (2014) 106-114.

“On the Factors that Control the Reactivity of meta-Benzynes”, J. Gao, B.J. Jankiewicz, J. Reece, H. Sheng, C.J. Cramer, J.J. Nash and H.I. Kenttӓmaa, Chem. Sci. 5 (2014) 2205-2215.

 

2013

“On-line Mass Spectrometric Methods for the Determination of the Primary Products of Fast Pyrolysis of Carbohydrates and For Their Gas-phase Manipulation”, M.R. Hurt, J.C. Degenstein, P. Gawecki, D.J. Borton II, N.R. Vinueza, L. Yang, R. Agrawal, W.N.  Delgass, F.H. Ribeiro and H.I. Kenttämaa, Anal. Chem. 22 (2013) 10927–10934.

“A Differentially Pumped Dual Linear Quadrupole Ion Trap (DLQIT) Mass Spectrometer: A Mass Spectrometer Capable of Clean MSn Experiments”, B.C. Owen, T.M. Jarrell, C.J. Schwartz, R. Oglesbee, M. Carlsen, E. Archibold, H.I. Kenttämaa, Anal. Chem. 85 (2013) 11284–11290.

“Ion-molecule Reactions of Aromatic Carbon-centered Distonic Radical Cations in the Gas Phase”, P. E. Williams, B.J. Jankiewicz, L. Yang, H.I. Kenttämaa, Chem. Rev. 113 (2013) 6949-6985 (invited).

"Mechanism of MTO-Catalyzed Deoxydehydration (DODH) of Diols to Alkenes Using Sacrificial Alcohols”, S. Liu, A. Senocak, J. Smeltz, L. Yang, B. Wegenhart, J. Yi, H.I. Kenttämaa, E.A. Ison, M.M. Abu-Omar, Organometallics 32 (2013) 3210-3219.

“The Development of a High-throughput LIAD Probe and Raster Sampling for Laser-induced Acoustic Desorption/Atmospheric Pressure Chemical Ionization”, D. Borton, L.M. Amundson, M.R. Hurt, A. Dow, J.T. Madden, G.J. Simpson and H.I.Kenttämaa, Anal. Chem. 85 (2013) 5720–5726.

“Comparison of Molecules’ Structures in Coal and Petroleum Asphaltenes by Using Mass Spectrometry”, M.R. Hurt, D. Borton, H.J. Choi and H.I. Kenttӓmaa, Energy Fuels 27 (2013) 3653–3658.

“Does the 2,6-Didehydropyridinium Cation Exist?” B.J. Jankiewicz, N.R. Vinueza, L.M. Kirkpatrick, V.A. Gallardo, G. Li, J.J. Nash, H.I. Kenttӓmaa, J. Phys. Org.Chem. 26 (2013) 707-714.

“Analysis of Xyloglucans by Ambient Chloride Attachment Ionization Tandem Mass Spectrometry”, N. Vinueza, V. Gallardo, N. Carpita, H.I. Kenttӓmaa, Carbohydrate Polymers 98 (2013) 1203-1213.

“Generation and Characterization of a Distonic Biradical Anion Formed from an Enediynone Prodrug in the Gas Phase”, L. Yang, T. Bekele, M.A. Lipton and H.I. Kenttӓmaa, J. Am. Soc. Mass Spectrom. 24 (2013) 563-572.

“Comparison of the Reactivity of the Three Distonic Isomers of the Pyridine Radical Cation Toward Tetrahydrofuran in Solution and in the Gas Phase”, F.Widjaja, Z. Jin, H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 24 (2013) 469-480.

“UV-Induced Effects on Chlorination of Creatinine”, S.C. Weng, J. Li, K.V. Wood, H.I. Kenttӓmaa, P. Williams, L.M. Amundson, E.R. Blatchley, III, Water Res. 47 (2013) 4948.

“Cleavage and Hydrodeoxygenation (HDO) of C-O Bonds Relevant to Lignin Conversion Using Pd/Zn Synergestic Catalysis”, T.H. Parsell, I. Klein, B.C. Owen, T.M. Jarrell, C.L. Marcum, L.J. Haupert, L.M. Amundson, H.I. Kenttӓmaa, F. Ribeiro, J.T. Miller, M.M. Abu-Omar, Chem. Sci. 4 (2013) 806-813.

“A Study of Three Gaseous para-Benzyne Analogs”, L.M. Kirkpatrick, N.R. Vinueza, B.J. Jankiewicz, V.A. Gallardo, E.F. Archibold, J.J. Nash, H.I. Kenttӓmaa, Chem. Eur. J. 19 (2013) 9022-9033.

“Analysis of Carbohydrates by Atmospheric Pressure Chloride Anion Attachment Tandem Mass Spectrometry”, N. Vinueza, V. Gallardo, N. Carpita, H.I. Kenttӓmaa, Fuel 105 (2013) 235-246.

 

2012

“Isolation and Characterization of Charge-tagged Phenylperoxyl Radicals in the Gas Phase: Direct Evidence for Products and Pathways in Low Temperature Benzene Oxidation”, B.B. Kirk, D.G. Harman, H.I. Kenttӓmaa, A.J. Trevitt, S.J. Blanksby, Phys. Chem. Chem. Phys.14  (2012) 16719-16730.

"High-performance Liquid Chromatography/High-resolution Multiple Stage Tandem Mass Spectrometry Using Negative-ion Mode Hydroxide-doped Electrospray Ionization or the Characterization of Lignin Degradation Products”, B.C. Owen, L.J. Haupert, T.M. Jarrell, C.L. Marcum, T.H. Parsell, M. M. Abu-Omar, J.J. Bozell, S.K. Black, H.I. Kenttämaa, Anal. Chem. 84 (2012) 6000-6007.

“Ion-Molecule Reactions for the Differentiation of Primary, Secondary and Tertiary Hydroxyl Functionalities in Protonated Analytes in a Tandem Mass Spectrometer”, M. Fu, P. Duan, J. Gao and H.I. Kenttӓmaa, Analyst 137 (2012) 5720 - 5722.

“Laser-induced Acoustic Desorption (LIAD) Mass Spectrometry”, A. Dow, A. Wittrig, H.I. Kenttämaa, Eur. J. Mass Spectrom. 18 (2012) 77-92.

“Identification and Counting of Oxygen Functionalities and Alkyl Groups of Aromatic Analytes in Mixtures by Positive-Mode Atmospheric Pressure Chemical Ionization Tandem Mass Spectrometry Coupled with High-Performance Liquid Chromatography”, L.M. Amundson, V.A. Gallardo, N.R. Vinueza, B.C. Owen, J.N. Reece, S.C. Habicht, M. Fu, R.C. Shea, A.B. Mossman, H.I. Kenttämaa, Energy Fuels 26 (2012) 2975-2989.

“Separation of Asphaltenes by Reversed Phase Liquid Chromatography with Fraction Characterization”, T.N. Loegel, N.D. Danielson, D.J. Borton, M.R. Hurt, H.I. Kenttӓmaa, Energy Fuels 26 (2012) 2850-2857.

"Characterization of Model Compounds of Processed Lignin and the Lignome by Using Atmospheric Pressure Ionization Tandem Mass  Spectrometry”, L.J. Haupert, B.C. Owen, C.L. Marcum, T.M. Jarrell, C.J. Pulliam, L.M. Amundson, P. Narra, M.S. Aqueel, T.H. Parsell, M.M. Abu-Omar, H.I. Kenttӓmaa, Fuel  95 (2012) 634-641.

Analysis of Saturated and Unsaturated Hydrocarbons by Using Hydrocar- bon Solvents and HPLC/APCI Mass Spectrometry”, J. Gao, D.J. Borton II, B.C. Owen, Z. Jin, H.I. Kenttӓmaa, J. Am. Soc. Mass Spectrom. 23 (2012) 816-822.

“Direct Comparison of Solution and Gas-Phase Reactions of the Three Distonic Isomers of the Pyridine Radical Cation with Methanol”, F.Widjaja, Z. Jin, J.J. Nash and H.I. Kenttӓmaa, J. Am. Chem. Soc. 134 (2012) 2085-2093.

“A Novel Chemical Ionization Reagent Ion for Organic Analytes: the Aquachloromanganese (II) Cation (ClMn(H2O+))”, P.P. Gqamana, P. Duan, M. Fu, V. Gallardo, H.I. Kenttӓmaa, Rapid Commun. Mass Spectrom. 26 (2012) 940-942.

“Identification of Epoxide Functionalities in Protonated Monofunctional Analytes by Using Ion-molecule Reactions and Collision-activated Dissociation in Different Ion Trap Tandem Mass Spectrometers”, R.J. Eismin, M. Fu, S. Yem, F. Widjaja, H.I. Kenttӓmaa, J. Am. Soc. Mass Spectrom. 23 (2012) 12-22.

“A Reactivity Study on a 1,2,3,5-Tetradehydrobenzene: the 2,4,6-Tridehydro-pyridine Radical Cation”, V.A. Gallardo, B.J. Jankiewicz, N.R. Vinueza, J.J. Nash and H.I. Kenttӓmaa, J. Am. Chem. Soc. 134 (2012) 1926-1929.

“The Reactivity of the 4,5-Didehydroisoquinolinium Cation”, N.R. Vinueza, E.F. Archibold, B.J. Jankiewicz, S.C. Habicht, M.S. Aqueel, J.J. Nash, H.I. Kenttӓmaa, Chem. Eur. J. 18 (2012) 8692-8698.

“Substituent Effects on the Non-radical Reactivity of 4-Dehydropyridinium Ion”, B.J. Jankiewicz, J.N. Reece, N.R. Vinueza, P. Narra, J.J. Nash, H.I. Kenttӓmaa, J. Phys. Chem. A 116 (2012) 3089-3093.

“Effects of a Hydroxyl-Substituent on the Reactivity of the 2,4,6-Tridehydro-pyridinium Cation, an Aromatic σ,σ,σ-Triradical”, B.J. Jankiewicz, N.R. Vinueza, J.N. Reece, Y.C. Lee, P. Williams, J.J. Nash, H.I. Kenttӓmaa, Chem. Eur. J. 18 (2012) 969-974.

 

2011

“Reactivity and Selectivity of Charged Phenyl Radicals Toward Amino Acids in a Fourier-transform Ion Cyclotron Resonance Mass Spectrometer”, J. Pates, L. Guler, J. Nash and H.I. Kenttӓmaa, J. Am. Chem. Soc. 133 (2011) 9331-9342.

“Identification and Counting of Oxygen Functionalities in Aromatic Analytes Related to Lignin by Using Negative Mode Electrospray Ionization and Multiple Collision-activated Dissociation Steps”,  L.M. Amundson, R. Eismin, J.N. Reece, M. Fu, S.C. Habicht, A.B. Mossman, R.C. Shea and H.I. Kenttӓmaa, Energy Fuels 25 (2011) 3212-3222.

“Carbon Disulfide Reagent Allows the Characterization of Nonpolar Analytes by Atmospheric Pressure Chemical Ionization (APCI) Mass Spectrometry”, B.C. Owen, J. Gao, D.J. Borton II, L.M. Amundson, E.F. Archibold, X. Tan, K. Azyat, R. Tykwinsky, M. Gray and H.I. Kenttӓmaa, Rapid Commun. Mass Spectrom. 25 (2011) 1924-1928.

"Differentiation of Protonated Aromatic Regioisomers Related to Lignin by Reactions with Trimethylborate in a Fourier-transform Ion Cyclotron Resonance Mass Spectrometer”, J. Somuramasami, P. Duan, L.M. Amundson, E. Archibold, B.E. Winger, H.I. Kenttӓmaa,  J. Am. Soc. Mass Spectrom. 22 (2011) 1040-1051.

“Comparison of Functional Group Selective Ion-molecule Reactions of Trimethyl Borate in Different Ion Trap Mass Spectrometers”, S.C. Habicht, N.R. Vinueza, L.M. Amundson, and H.I. Kenttӓmaa, J. Am. Soc. Mass Spectrom.  22 (2011) 520-530.

“Differentiation of Regioisomeric Aromatic Ketocarboxylic Acids by Positive Mode Atmospheric Pressure Chemical Ionization Collision-Activated Dissociation Tandem Mass Spectrometry in a Linear Quadrupole Ion Trap Mass Spectrometer”, L.M. Amundson, B.C. Owen, V.A. Gallardo, S.C. Habicht, M. Fu, R.C. Shea, A.B. Mossman and H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 22 (2011) 670-682.

“Laser-induced Acoustic Desorption/Atmospheric Pressure Chemical Ionization  Mass Spectrometry”, J. Gao, D.J. Borton II, B.C. Owen, Z. Jin, M. Hurt, L.M. Amundsen, J.T. Madden, K. Qian and H.I. Kenttӓmaa, J. Am. Soc. Mass Spectrom. 3 (2011) 531-538.

“Characterization of Nonpolar Lipids and Steroids by Using Laser-induced Acoustic Desorption/Chemical Ionization, Atmospheric Pressure Chemical Ionization, and Electrospray Ionization Mass Spectrometry”, Z. Jin, S. Daiya and H.I. Kenttämaa, Int. J. Mass Spectrom. 301 (2011) 234-239.

 

2010

“Influence of Hydrogen Bonding on Hydrogen-Atom Abstraction Reactions of Dehydropyridinium Cations in the Gas Phase”, J. Nash, A. Adeuya, H.I. Kenttӓmaa, J. Phys. Chem. A 114 (2010) 12851-12857.

“Molecular Structures of Asphaltenes Based on Their Ions’ Dissociation Reactions in Mass Spectrometry”, D. Borton, D. Pinkston, M. Hurt, X. Tan, K. Azyat, R. Tykwinsky, M. Gray, K. Qian, H.I. Kenttӓmaa, Energy Fuels 24 (2010) 5548-5559.

"Reactions of an Aromatic σ,σ-Biradical with Amino Acids and Dipeptides in the Gas Phase”,  M. Fu, S. Li, E. Archibold, M.J. Yurkovich, J.J. Nash, H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 10 (2010) 1737-1752.

“Differentiation of Isomeric Hydrocarbons Using [ClMn(H2O)]+ Chemical Ionization and Collision-activated Dissociation in a Fourier Transform Ion Cyclotron Resonance Mass Spectrometer.” D.S. Pinkston, P. Duan, V.A. Gallardo, M. Fu, S.C. Habicht and H.I. Kenttӓmaa, Energy Fuels  24 (2010) 3119-3124.

"Laser-induced Acoustic Desorption Coupled with a Linear Quadrupole Ion Trap Mass Spectrometer”, S.C. Habicht, L.M. Amundson, P. Duan, N.R. Vinueza and H.I. Kenttämaa, Anal. Chem. 82 (2010) 608-614.

Identification and Counting of Carbonyl and Hydroxyl Functionalities in Analytes by Using Solution Reduction Followed by Mass Spectrometric Analysis Based on Ion-Molecule Reactions”, J. Somuramasami, B.E. Winger, T.A. Gillespie and H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 21 (2010) 773-784.

Data-Dependent Neutral Gain MS3“Data-Dependent Neutral Gain MS3: Toward Automated Identification of the N- Oxide Functional Group in Drug Metabolites”, S.C. Habicht, N.R. Vinueza, H.I., Kenttämaa, J. Am. Soc. Mass Spectrom. 21 (2010) 559-563; selected for the cover of the April issue.

"Liquid Chromatography/Tandem Mass Spectrometry Utilizing Ion-molecule Reaction and collision-activated Dissociation for the Identification of N-oxide Drug Metabolites", S.C. Habicht, P. Duan, N.R. Vinueza, M.K. Fu, H.I. Kenttamaa, J. Pharm. Biomed. Anal. 51 (2010) 805-811.

 

2009

"Analysis of Asphaltenes and Asphaltene Model Compunds by Laser-Induced Accoustic Desorption/Fourier Transform ion Cycloltron Resonance Mass Spectromety", P.D. Pinkston, P. Duan, V.A. Gallardo, S.C. Habicht, X. L. Tan, K.N. Qain, M. Gary, K. Mullen, H.I. Kenttämaa, Energy Fuels 23 (2009) 5564-5570.

"Gas-phase Reactivity of Protonated 2-, 3-, and 4-Dehydropyridine Radicals Toward Organic Reagents", A. Adeuya, J. Price, B.B.J. Jankiewicz, J.J. Nash, H.I. Kenttämaa,J. Phys. Chem. A 113 (2009) 13663-13674.

"The Reactivity of Metallated Nitrenium Ions Studied by FT-ICR", M.J. Yurkovich, P. Duan, R.C. Shea, M.A. Watkins, S.M. Mandell, E.M. Tippmann, S. Li, M.S. Platz, H.I. Kenttämaa, Int. J. Mass Spectrom.  287 (2009) 16-20.

"Phenyl Radical-Induced Damage to Dipeptides", S. Li, S.C. Habichi, G.O. Pates, J.J. Nash, H.I. Kenttämaa, J. Org. Chem. 74 (2009) 7724-7732.

"Ion/Molecule Reaction for the Mass Spectrometric Characterization of Basic Bifunctional Analytes" M. Fu, P. Duan, S. Li, R.J. Eismin, H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 20 (2009) 1242-1250.

"Ion-Molecule Reactions Facilitate the Identification and Differentiation of Primary, Secondary and Tertiary Amino Functionalities in Protonated Monofunctional Analytes in Mass Spectrometry", M. Fu, R.J. Eismin, P. Duan, S. Li, H.I. Kenttämaa, Int. J. Mass Spectrom. 282 (2009) 77-84 (Science Direct's list of the Top 25 Hottest Articles in the International Journal of Mass Spectrometry from April to June 2009).

Identification of Aliphatic and Aromatic Tertiary N-oxide Functionalities in Protonated Analytes via Ion-molecule Reactions in a Mass Spectrometer", P. Duan, M. Fu, T.A. Gillespie, B.E. Winger, H.I. Kenttämaa,J. Org. Chem. 74 (2009) 1114-1123.

 

2008

“Correlation of Hydrogen-Atom Abstraction Reaction Efficiencies for Aryl Radicals with their Vertical Electron Affinities and the Vertical Ionization Energies of the Hydrogen-Atom Donors”, L. Jing, J.J. Nash, Kenttämaa, J. Am. Chem. Soc. 130 (2008) 17697-17709.

“Reactivity of the 3,4,5-Tridehydropyridinium Cation - An Aromatic σ,σ,σ-Triradical”, B.J. Jankiewicz, J.N. Reece, N.R. Vinueza, J.J. Nash, H.I. Kenttämaa, Angew. Chem. Int. Ed. 47 (2008) 9860-9865 (among top 10% of manuscripts); selected for the cover of the communications section.

“The Selectivity of Charged Phenyl Radicals in Hydrogen Atom Abstraction Reactions with Isopropanol”, L. Jing, L.P. Guler, G. Pates, H.I. Kenttämaa, Phys. Chem. A 112 (2008) 9708-9715.

"Identification of the Aromatic Tertiary N-oxide Functionality in Protonated Analytes via Ion-molecule Reactions in Mass Spectrometers", P. Duan, T.A. Gillespie, B.E. Winger, H.I. Kenttämaa, J. Org. Chem. 73 (2008) 4888-4894.

“Reactivity of Aromatic σ,σ-Biradicals Toward Dinucleoside Phosphates”, L. Yang, J.J. Nash, M.J. Yurkovich, H.I. Kenttämaa, Org. Lett. 10 (2008) 1889-1892

"Quantum Chemical Characterization of the Structures, Thermochemical Properties, and Doublet-Quartet Splittings of Tridehydropyridinium Cations", J.J.Nash, H.I. Kenttämaa, C.J. Cramer,J. Phys. Chem. A 112 (2008) 5542-5553.

"Regioselective Ion-Molecule Reactions for the Mass Spectrometric Differentiation of Protonated Isomeric Aromatic Diamines”, M. Fu, P. Duan, S. Li, S.C. Habicht, D.S. Pinkston, N.R. Vinueza, H.I. Kenttämaa, The Analyst, 133 (2008) 452-454.

“Identification of the Carboxylic Acid Functionality by Using Electrospray Ionization and Ion-Molecule Reactions in a Modified Linear Quadrupole Ion Trap Mass Spectrometer”, S.C. Habicht, N.R. Vinueza, E.F. Archibold, P. Duan, H.I. Kenttämaa, Anal. Chem. 80 (2008) 3416-3421.

“Analysis of Base Oil Fractions by ClMn(H2O)+ Chemical Ionization Combined with Laser-induced Acoustic Desorption/Fourier Transform Ion Cyclotron Resonance Mass Spectrometry”, P. Duan, K. Qian, S.C. Habicht, D.S. Pinkston, M. Fu, H.I. Kenttämaa,Anal. Chem. 80 (2008) 1847-1853 (Accelerated Article).

 

2007

“Gas-Phase Reactions of ClMn(H2O)+ with Polar and Nonpolar Hydrocarbons in a Mass Spectrometer” P. Duan, M. Fu, D.S. Pinkston, S.C. Habicht, H.I. Kenttämaa, J. Am. Chem. Soc. 129 (2007) 9266-9267.

“Reactivity of an Aromatic σ,σ,σ-Triradical: the 2,4,6-Tridehydropyridinium Cation”, B.J. Jankiewicz, A. Adeuya, M.J. Yurkovich, N.R. Vinueza, S.J. Gardner, III, M. Zhou, Nash, J.J.; Kenttämaa, H.I.Angew. Chem. Int. Ed. Engl. 46 (2007) 9198-9201 (selected for the cover of the communications section).

“Ion-Molecule Reactions of Trimethylborate Allow the Mass Spectrometric Identification and Counting of Functional Groups in Protonated Bifunctional Oxygen-Containing Compounds and Polyols”, J. Somuramasami, P. Duan, M.A.Watkins, B.E. Winger, H.I. Kenttämaa,Int. J. Mass Spectrom. Ion Processes 265 (2007) 359-371.

“Functional-Group Selective Ion-Molecule Reactions: Mass Spectrometric Identification of the Amido Functionality in Protonated Monofunctional Compounds”, K.M. Campbell, M.A. Watkins, S. Li, M.N. Fiddler, B.E. Winger, H.I. Kenttämaa, J. Org. Chem. 72 (2007) 3159-3165; (selected for the cover of the issue).

“Design and Characterization of a High-power Laser-induced Acoustic Desorption (LIAD) Probe Coupled with a Fourier-transform Ion Cyclotron Resonance Mass Spectrometer”, R.C. Shea, S.C. Habicht, W.E. Vaughn, H.I. Kenttämaa, Anal. Chem. 79 (2007) 2688-2694.

“Experimental Investigations of the Internal Energy of Molecules Evaporated via Laser-induced Acoustic Desorption into a Fourier-transform Ion Cyclotron Resonance Mass Spectrometer (LIAD/FT-ICR)”, R.C. Shea, C.J. Petzold, J. Liu, H.I. Kenttämaa,Anal. Chem. 79 (2007) 1825-1832.

“A Novel Approach for Peptide Sequencing: Laser-induced Acoustic Desorption Combined with P(OCH3)2+ Chemical Ionization and Collision-activated Dissociation in a Fourier Transform Ion Cyclotron Resonance Mass Spectrometer”, J. Somuramasami, H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 18 (2007) 525-540.

 

2006

“Quantum Chemical Characterization of the Vertical Electron Affinities of Didehydroquinolinium and Didehydroisoquinolinium Ions”, J.J. Nash, H.I. Kenttämaa, C.J. Cramer, J. Phys. Chem. A 110 (2006) 10309-10315.

“Characterization of Laser-induced Acoustic Desorption Utilized with a Fourier Transform Ion Cyclotron Resonance Mass Spectrometer”, R.C. Shea, J.L. Campbell, C.J. Petzold, S. Li, D.J. Aaserud, H.I. Kenttämaa, Anal. Chem. 78 (2006) 6133-6139.

“Reactivity of Aromatic σ,σ-Biradicals Toward Riboses”, A. Adeuya, L. Yang, F.S. Amegayibor, J.J. Nash, H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 17 (2006) 1325-1334.

"Rearrangement of Phenylcarbene Radical Cation to Dehydrotropylium Cation", M.A. Watkins, E.D. Nelson, S. E. Tichy, H.I. Kenttämaa,Int. J. Mass Spectrom. 249-250 (2006) 1-7.

 

2005

“The Reactivity of the N-Methylene-5,8-didehydroquinolinium Triradical”, K.E. Nizzi, F.S. Amegayibor, J.J. Nash, H.I. Kenttämaa, J. Am. Chem. Soc. 127 (2005) 13152-13153.

“Laser-Induced Acoustic Desorption/Fourier Transform on Cyclotron Resonance Mass Spectrometry for Petroleum Distillate Analysis”, K.E. Crawford, J.L. Campbell, M.N. Fiddler, P. Duan, K. Qian, M.L. Gorbaty, H.I. Kenttämaa,Anal. Chem. 77 (2005) 7916-7923.

“Quantum Chemical Characterization of the Structures, Thermochemical Properties, and Singlet-Triplet Splittings of Didehydroquinolinium and Didehydroisoquinolinium Ions”, J.J. Nash, H.I. Kenttämaa, C.J. Cramer, J. Phys. Chem. A 109 (2005) 10348-10356.

“Phenyl Radicals React with Dinucleoside Phosphates by Addition to Purine Bases and H-Atom Abstraction from a Sugar Moiety”, J. Liu, C.J. Petzold, L.E. Ramirez-Arizmendi, J. Perez, H.I. Kenttämaa,J. Am. Chem. Soc. 127 (2005) 12758-12759.

“Compound Screening for the Presence of the Primary N-oxide Functionality via Ion-Molecule Reactions in a Mass Spectrometer”, M.A. Watkins, D.V. WeWora, S. Li, B.E. Winger, H.I. Kenttämaa, Anal. Chem.  77 (2005) 5311-5316.

“Analysis of Polyethylene by Using Cyclopentadienyl Cobalt Chemical Ionization Combined with Laser-induced Acoustic Desorption/Fourier Transform Ion Cyclotron Resonance Mass Spectrometry”, J.L. Campbell, M.N. Fiddler, K.E. Crawford, P.P. Gqamana, H.I. Kenttämaa, Anal. Chem. 77 (2005) 4020-4026.

“Theoretical and Experimental Investigations on the Reactions of Positively Charged Phenyl Radicals with Aromatic Amino Acids”, Y. Huang, H.I. Kenttämaa, J. Am. Chem. Soc. 127 (2005) 7952-7960.

“Demonstration of Tunable Reactivity for meta-Benzynes”, J.J. Nash, K.E. Nizzi, A. Adeuya, M.J. Yurkovich, C.J. Cramer, H.I. Kenttämaa, J. Am. Chem. Soc. 127 (2005) 5760-5761.

“Ion-Molecule Reactions for the Characterization of Polyols and Polyol Mixtures by ESI/FT-ICR Mass Spectrometry.” Watkins, M.A.; Winger, B.E.; Shea, R.C.; Kenttämaa, H.I. Anal. Chem. 77 (2005) 1385-1392.

“Radical Reactions as Modeled by Distonic Ions”, a book chapter in the Encyclopedia of Mass Spectrometry, Volume 4: Fundamentals of and Applications to Organic and Organometallic) Compounds, Volume Ed. N.N.M. Nibbering, Eds. M.L. Gross, R. Caprioli, Elsevier: New York, (2005) (invited).

“Ion-molecule Reactions of Distonic Radical Cations,” a book chapter in the Encyclopedia of Mass Spectrometry, Volume 4: Fundamentals of and Applications to Organic (and Organometallic) Compounds, Volume Ed. N.N.M. Nibbering, Eds. M.L. Gross, R. Caprioli, Elsevier: New York, 2005 (invited).

“Reactions of Charged Phenyl Radicals with Aliphatic Amino Acids in the Gas Phase”, Y. Huang, L. Guler, J. Heidbrink, H.I. Kenttämaa, J. Am. Chem. Soc. 127 (2005) 3973-3978.

 

2004

“Gas-phase Reactivity of Charged π-Type Biradicals”, S.E. Tichy, E.D. Nelson, F.S. Amegayibor, H.I. Kenttämaa, J. Am. Chem. Soc. 126 (2004) 12957-12967.

“The Gas-Phase Acidities of cis- and trans-2-tert-Butyl-1,3-dithian-5-ol”, A. Adeuya, A. Artau, H.I. Kenttämaa, R.R. Squires, J. Phys. Chem. A. 108 (2004) 7379-7385.

“Theoretical Estimations of the 298 K Gas-Phase Acidities of the Purine-Based Nucleobases Adenine and Guanine”, Y. Huang, H.I. Kenttämaa,J. Phys. Chem. A 108 (2004) 4485-4490.

“Ion-Molecule Reactions for Mass Spectrometric Identification of Functional Groups in Protonated Oxygen-containing Monofunctional Compounds”, M.A. Watkins, J.M. Price, B.E. Winger, H.I. Kenttämaa, Anal. Chem. 76 (2004) 964-976.

“Analysis of Saturated Hydrocarbons by Using Chemical Ionization Combined with Laser-induced Acoustic Desorption Fourier-transform Ion Cyclotron Resonance Mass Spectrometry (LIAD/FT-ICR)”, J.L. Campbell, K.E. Crawford, H.I. Kenttämaa, Anal. Chem. 76 (2004) 959-963.

“Quantitative Determination of the Selectivity of Five Different Phenyl Radicals in Hydrogen atom Abstraction from Ethanol”, L. Jing, L.P. Guler, J.J. Nash, H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 15 (2004) 913-919.

“Gas-Phase Radical-radical Recombination Reactions of Nitroxides with Substituted Phenyl Radicals”, J.L. Heidbrink, F.S. Amegayibor, H.I. Kenttämaa, Int. J. Chem. Kin. 36 (2004) 216-229.

 

2003

“Radical Reactions of Didehydroarenes with a 1,4-Relationship”, S.A. Amegayibor, J.J. Nash, H.I. Kenttämaa, J. Am. Chem. Soc. 125 (2003) 14256-14257.

“Theoretical and Experimental Investigations on the Chemical Reactions of Positively Charged Phenyl Radicals with Cytosine and 1-Methylcytosine”, Y. Huang, H.I. Kenttämaa, J. Am. Chem. Soc. 125 (2003) 9878-9889.

“Characterization of Two Chloro-Substituted m-Benzyne Isomers: Effect of Substitution on Reaction Efficiencies and Products”, J.M. Price, H.I. Kenttämaa,  J. Phys.Chem. A 107 (2003) 8985-8995.

“Theoretical Estimations of the 298 K Gas-Phase Acidities of the Pyrimidine-based Nucleobases Uracil, Thymine and Cytosine”, Y. Huang, H.I. Kenttämaa, J. Phys. Chem. A.  107 (2003) 4893-4897.

“Experimental and Theoretical Characterization of the 3,5-Didehydrobenzoate Anion: A Negatively Charged meta-Benzyne”, J.M. Price, K.E. Nizzi, J.L. Campbell, H.I. Kenttämaa, M. Seierstad, C.J. Cramer, J. Am. Chem. Soc. 125 (2003) 131-140.

“Reactivity of Substituted Charged Phenyl Radicals toward Components of Nucleic Acids”, L.E. Ramirez-Arizmendi, J.L. Heidbrink, L.P. Guler, H.I. Kenttämaa, J. Am. Chem. Soc. 125 (2003) 2272-2281.

“Distonic Radical Cations”, a book chapter in the Encyclopedia of Mass Spectrometry, Volume 1: Theory and Ion Chemistry, Volume Ed. P.B. Armentrout, Eds. M.L. Gross, R. Caprioli (ISBN 0-08-043802-4), Elsevier: New York, 2003 (invited).

 

2002

“Chemical Properties of a para-Benzyne”, F.S. Amegayibor, J.J. Nash, A.S. Lee, J. Thoen, C.J. Petzold, H.I. Kenttämaa, J. Am. Chem. Soc. 124 (2002) 12066-12067.

“Charge-site Effects on the Radical Reactivity of Distonic Ions”, C.J. Petzold, E.D. Nelson, H.A. Lardin, H.I. Kenttämaa, J. Phys. Chem. A 106 (2002) 9767-9775.

“An Experimental and Computational Study of the Gas-Phase Structures of Five-Carbon Monosaccharides”, L.P. Guler, Y.-Q. Yu, H.I. Kenttämaa, J. Phys. Chem. A 106 (2002) 6754-6764.

“Mechanistic Study of Stereoselective Gas-Phase Reactions of Phosphenium Ions with cis- and trans-1,2-Diaminocyclohexanes”, R.S. Thompson, L.P. Guler, E.D. Nelson, Y.-Q. Yu, H.I. Kenttämaa, J. Org. Chem.  67 (2002) 5076-5084.

“Differentiation of Stereoisomeric Steroids by Reactions with Phosphenium Ions”, C. Petucci, L. Guler, H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 13 (2002) 362-370.

“Hydrogen Atom Abstraction Reactions of Charged Aromatic σ-Radicals Related to the Active Intermediates of Enediyne Antitumor Drugs”, C. Petucci, M. Nyman, L. Guler, H.I. Kenttämaa, J. Am. Chem. Soc. 124 (2002) 4108-4115.

“Photodechlorination of 3,3'-Dichlorobenzidine in Water”, M.C. Nyman, K.S. Haber, H.I. Kenttämaa, E.R. Blatchley III, J. Environ.Toxicol. Chem.  21 (2002) 500-506.

“Gas-Phase Reactions of Charged Phenyl Radicals with Nonvolatile, Thermally Labile Biomolecules Evaporated by Laser-induced Acoustic Desorption”, C.J. Petzold, L.E. Ramirez-Arizmendi, J.L. Heidbrink, J. Perez, H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 13 (2002) 192-194.

 

2001

“Polar Effects Control Hydrogen Abstraction Reactions of Charged, Substituted Phenyl Radicals”, J.L. Heidbrink, L.E. Ramirez-Arizmendi, K.K. Thoen, L. Guler, H.I. Kenttämaa, J. Phys. Chem. A. 105 (2001) 7875-7884.

“An Examination of Barriered and Barrierless Hydrogen Atom Abstraction Reactions by Organic Radical Cations: the Cytosine Radical Cation”, J.M. Price, C.J. Petzold, H.C.M. Byrd, H.I. Kenttämaa, Int. J. Mass Spectrom. 212 (2001) 455-466.

meta-Benzyne Reacts as an Electrophile”, E.D. Nelson, A. Artau, J.M. Price, S.E. Tichy, L. Jing, H.I. Kenttämaa,J. Phys. Chem. A 105 (2001) 10155-10168.

“Hydrogen Atom Abstraction and Addition Dominate the Reactivity of Charged Phenyl Radicals Toward Monosubstituted Aromatic Substrates in the Gas Phase”, L.E. Ramirez-Arizmendi, L. Guler, J. Ferra, Jr., K. Thoen, H.I. Kenttämaa, Int. J. Mass Spectrom. 210/211 (2001) 511-520 (special issue to honor Nico Nibbering’s retirement).

“Synthesis and Characterization of a Distonic Nitrene Ion: Gas-Phase Reactivity of Singlet and Triplet N-Phenyl-3-Nitrenopyridinium Ion” S.E. Tichy, B.T. Hill, J.L. Campbell, H.I. Kenttämaa, J. Am. Chem. Soc. 123 (2001) 7923-7924.

“N-Terminal Derivatization and Fragmentation of Neutral Peptides via Ion-Molecule Reactions with Acylium Ions: Towards Gas-Phase Edman Degradation?”, G.E. Reid, S.E. Tichy, J. Perez, R.A.J. O’Hair, R.J. Simpson, H.I. Kenttämaa, J. Am. Chem. Soc. 123 (2001) 1184-1192.

“Polarity of the Transition State Controls the Reactivity of Related Charged Phenyl Radicals toward Atom and Group Donors”, S.E. Tichy, K.K. Thoen, J.M. Price, J.J. Ferra, Jr., C.J. Petucci, H.I. Kenttämaa,J. Org. Chem. 66 (2001) 2726-2733.

“An FT-ICR Study of the 3,5-Dehydrophenyl Cation”, E.D. Nelson, H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 12 (2001) 258-267.

 

2000

m-Benzyne Reacts as an Electrophile”, E.D. Nelson, A. Artau, J.M. Price, H.I. Kenttämaa, J. Am. Chem. Soc. 122 (2000) 8781-8782.

“Reactivity of the Gaseous Radical Cations of Trimethylenemethane and 2-Iso-propylidenecyclopentane-1,3-diyl”, P.K. Chou, L. Gao, S.E. Tichy, S.L. Painter, S.C. Blackstock, H.I. Kenttämaa,J. Phys. Chem. A 104 (2000) 5530-5534.

"Laser-Induced Acoustic Desorption/Chemical Ionization in Fourier-transform Ion Cyclotron Resonance Mass Spectrometry", J. Perez, L.E. Ramirez-Arizmendi, C.J. Petzold, L.P. Guler, E.D. Nelson, H.I. Kenttämaa, Int. J. Mass Spectrom. 198 (2000) 173-188.

"Polar Effects on Iodine Atom Abstraction by Charged Phenyl Radicals (Distonic Radical Cations)", J.L. Heidbrink, K.K. Thoen, H.I. Kenttämaa, J. Org. Chem.  63 (2000) 645-651.

"Gas-Phase Fragmentation of Di- and Tripeptides via Ion-Molecule Reactions with ClPCl+", Y.-Q. Yu, C.L. Stumpf, H.I. Kenttämaa, Int. J. Mass Spectrom. 195/196 (2000) 609-623 (invited article, memorial issue in honor of Bob Squires).

 

See pre-2000 publications