(orcid 0000-0001-8839-4822)
Geng, Wen-Chao; Zhang, Dongmei et al. (2020) Host-Guest Complexation of Amphiphilic Molecules at the Air-Water Interface Prevents Oxidation by Hydroxyl Radicals and Singlet Oxygen Angewandte Chemie International Edition; Vol. 59; No. 31; https://doi.org/10.1002/anie.202001355
Fabijanczuk, Kimberly; Gaspar, Kaylee et al. (2019) Resin- and Magnetic Nanoparticle-Based Free Radical Probes for Glycan Capture, Isolation, and Structural Characterization Analytical Chemistry; Vol. 91; No. 24; https://doi.org/10.1021/acs.analchem.9b01303
Mu, Chaonan; Wang, Jie et al. (2019) Mass Spectrometric Study of Acoustically Levitated Droplet Illuminates Molecular-Level Mechanism of Photodynamic Therapy for Cancer involving Lipid Oxidation Angewandte Chemie International Edition; Vol. 58; No. 24; https://doi.org/10.1002/anie.201902815
Armentrout, Peter B.; Baer, Thomas et al. (2019) Robert C. Dunbar (1943–2017) European Journal of Mass Spectrometry; Vol. 25; No. 1; https://doi.org/10.1177/1469066718817619
Zhang, Xinxing; Barraza, Kevin M. et al. (2018) Subtle Changes in Lipid Environment Have Profound Effects on Membrane Oxidation Chemistry Journal of the American Chemical Society; Vol. 140; No. 50; https://doi.org/10.1021/jacs.8b08610
Huang, Yuanlong; Barraza, Kevin M. et al. (2018) Probing the OH Oxidation of Pinonic Acid at the Air-Water Interface Using Field-Induced Droplet Ionization Mass Spectrometry (FIDI-MS) Journal of Physical Chemistry A; Vol. 122; No. 31; https://doi.org/10.1021/acs.jpca.8b05353
Zhang, Xinxing; Barraza, Kevin M. et al. (2018) Cholesterol provides nonsacrificial protection of membrane lipids from chemical damage at air–water interface Proceedings of the National Academy of Sciences of the United States of America; Vol. 115; No. 13; https://doi.org/10.1073/pnas.1722323115
Upton, Kathleen T.; Schilling, Katherine A. et al. (2017) Easily fabricated ion source for characterizing mixtures of organic compounds by direct analysis in real time mass spectrometry Analytical Methods; Vol. 9; No. 34; https://doi.org/10.1039/c7ay00971b
Zhang, Xinxing; Barraza, Kevin M. et al. (2017) Time Resolved Study of Hydroxyl Radical Oxidation of Oleic Acid at the Air-Water Interface Chemical Physics Letters; Vol. 683; https://doi.org/10.1016/j.cplett.2017.05.051
Zhang, Xinxing; Barraza, Kevin M. et al. (2017) Field-induced droplet ionization illuminates stepwise oxidation of cell membrane lipids by hydroxyl radicals at the air-water interface In: 254th American Chemical Society National Meeting & Exposition, August 20-24, 2017, Washington, DC https://resolver.caltech.edu/CaltechAUTHORS:20170912-084045411
Thomas, Daniel A.; Coggon, Matthew M. et al. (2016) Real-Time Studies of Iron Oxalate-Mediated Oxidation of Glycolaldehyde as a Model for Photochemical Aging of Aqueous Tropospheric Aerosols Environmental Science and Technology; Vol. 50; No. 22; https://doi.org/10.1021/acs.est.6b03588
Desai, Nikunj; Thomas, Daniel A. et al. (2016) Eradicating mass spectrometric glycan rearrangement by utilizing free radicals Chemical Science; Vol. 7; No. 8; https://doi.org/10.1039/C6SC01371F
Sohn, Chang Ho; Yin, Sheng et al. (2015) Investigation of the mechanism of electron capture and electron transfer dissociation of peptides with a covalently attached free radical hydrogen atom scavenger International Journal of Mass Spectrometry; Vol. 390; https://doi.org/10.1016/j.ijms.2015.07.007
Brunelli, Nicholas; Giapis, Konstantinos P. et al. (2015) Continuous flow mobility classifier interface with mass spectrometer https://resolver.caltech.edu/CaltechAUTHORS:20160106-115316902
Sohn, Chang Ho; Gao, Jinshan et al. (2015) Mechanisms and energetics of free radical initiated disulfide bond cleavage in model peptides and insulin by mass spectrometry Chemical Science; Vol. 6; No. 8; https://doi.org/10.1039/C5SC01305D
Thomas, Daniel A.; Wang, Lingtao et al. (2015) Mass Spectrometric Sampling of a Liquid Surface by Nanoliter Droplet Generation from Bursting Bubbles and Focused Acoustic Pulses: Application to Studies of Interfacial Chemistry Analytical Chemistry; Vol. 87; No. 6; https://doi.org/10.1021/ac504494t
Johnson, Paul V.; Hodyss, Robert et al. (2014) Ion Funnel Augmented Mars Atmospheric Pressure Photoionization Mass Spectrometry for In Situ Detection of Organic Molecules Journal of the American Society for Mass Spectrometry; Vol. 25; No. 11; https://doi.org/10.1007/s13361-014-0930-z
Thomas, Daniel A.; Sohn, Chang Ho et al. (2014) Hydrogen Bonding Constrains Free Radical Reaction Dynamics at Serine and Threonine Residues in Peptides Journal of Physical Chemistry A; Vol. 118; No. 37; https://doi.org/10.1021/jp501367w
Beauchamp, Jesse L. (2014) Field induced droplet ionization: Investigations of complex chemical reactions at the air-water interface employing mass spectrometry In: 248th American Chemical Society National Meeting & Exposition, August 10-14, 2014, San Francisco, CA https://resolver.caltech.edu/CaltechAUTHORS:20140815-104350922
Gao, Jinshan; Thomas, Daniel A. et al. (2013) Biomimetic Reagents for the Selective Free Radical and Acid–Base Chemistry of Glycans: Application to Glycan Structure Determination by Mass Spectrometry Journal of the American Chemical Society; Vol. 135; No. 29; https://doi.org/10.1021/ja402810t
Mui, Wilton; Thomas, Daniel A. et al. (2013) Ion Mobility-Mass Spectrometry with a Radial Opposed Migration Ion and Aerosol Classifier (ROMIAC) Analytical Chemistry; Vol. 85; No. 13; https://doi.org/10.1021/ac400580u
Brunelli, N. A.; Neidholdt, E. L. et al. (2013) Continuous Flow Ion Mobility Separation with Mass Spectrometric Detection Using a Nano-Radial Differential Mobility Analyzer at Low Flow Rates Analytical Chemistry; Vol. 85; No. 9; https://doi.org/10.1021/ac3032417
Shin, Young Shik; Choi, Tae Su et al. (2012) A microfluidic-based bubble generation platform enables analysis of physical property change in phospholipid surfactant layers by interfacial ozone reaction Lab on a Chip; Vol. 12; No. 24; https://doi.org/10.1039/c2lc40940b
Austin, Daniel E.; Shen, Andy H. T. et al. (2012) Time-of-flight mass spectrometry of mineral volatilization: Toward direct composition analysis of shocked mineral vapor Review of Scientific Instruments; Vol. 83; No. 4; https://doi.org/10.1063/1.4705745
Sohn, Chang Ho; Agnew, Heather D. et al. (2012) Designer Reagents for Mass Spectrometry-Based Proteomics: Clickable Cross-Linkers for Elucidation of Protein Structures and Interactions Analytical Chemistry; Vol. 84; No. 6; https://doi.org/10.1021/ac202637n
Sohn, Chang Ho; Lee, J. Eugene et al. (2012) Click Chemistry Facilitates Formation of Reporter Ions and Simplified Synthesis of Amine-Reactive Multiplexed Isobaric Tags for Protein Quantification Journal of the American Chemical Society; Vol. 134; No. 5; https://doi.org/10.1021/ja2099003
Ko, Jae Yoon; Choi, Sun Mi et al. (2012) Studying Interfacial Reactions of Cholesterol Sulfate in an Unsaturated Phosphatidylglycerol Layer with Ozone Using Field Induced Droplet Ionization Mass Spectrometry Journal of the American Society for Mass Spectrometry; Vol. 23; No. 1; https://doi.org/10.1007/s13361-011-0275-9
Neidholdt, Evan L.; Beauchamp, J. L. (2011) Switched Ferroelectric Plasma Ionizer (SwiFerr) for Ambient Mass Spectrometry Analytical Chemistry; Vol. 83; No. 1; https://doi.org/10.1021/ac1013833
Kim, Hugh I.; Kim, Hyungjun et al. (2010) Time Resolved Studies of Interfacial Reactions of Ozone with Pulmonary Phospholipid Surfactants Using Field Induced Droplet Ionization Mass Spectrometry Journal of Physical Chemistry B; Vol. 114; No. 29; https://doi.org/10.1021/jp102332g
Kim, Hugh I.; Kim, Hyungjun et al. (2010) Interfacial Reactions of Ozone with Surfactant Protein B in a Model Lung Surfactant System Journal of the American Chemical Society; Vol. 132; No. 7; https://doi.org/10.1021/ja908477w
Grimm, Ronald L.; Beauchamp, J. L. (2010) Evaporation and Discharge Dynamics of Highly Charged Multicomponent Droplets Generated by Electrospray Ionization Journal of Physical Chemistry A; Vol. 114; No. 3; https://doi.org/10.1021/jp907162w
Neidholdt, Evan L.; Beauchamp, J. L. (2009) Ionization Mechanism of the Ambient Pressure Pyroelectric Ion Source (APPIS) and Its Applications to Chemical Nerve Agent Detection Journal of the American Society for Mass Spectrometry; Vol. 20; No. 11; https://doi.org/10.1016/j.jasms.2009.07.009
Sohn, Chang Ho; Chung, Cheol K. et al. (2009) Probing the mechanism of electron capture and electron transfer dissociation using tags with variable electron affinity Journal of the American Chemical Society; Vol. 131; No. 15; https://doi.org/10.1021/ja806534r
Kim, Hugh I.; Beauchamp, J. L. (2009) Mapping disulfide bonds in insulin with the route 66 method: selective cleavage of SOC bonds using alkali and alkaline earth metal enolate complexes Journal of the American Society for Mass Spectrometry; Vol. 20; No. 1; https://doi.org/10.1016/j.jasms.2008.10.003
Kim, Hyungjun; Kim, Hugh I. et al. (2008) Experimental and Theoretical Investigation into the Correlation between Mass and Ion Mobility for Choline and Other Ammonium Cations in N_2 Analytical Chemistry; Vol. 80; No. 6; https://doi.org/10.1021/ac701888e
Kim, Hugh I.; Beauchamp, J. L. (2008) Identifying the Presence of a Disulfide Linkage in Peptides by the Selective Elimination of Hydrogen Disulfide from Collisionally Activated Alkali and Alkaline Earth Metal Complexes Journal of the American Chemical Society; Vol. 130; No. 4; https://doi.org/10.1021/ja075698w
Kim, Hugh I.; Beauchamp, J. L. (2007) Cluster Phase Chemistry: Collisions of Vibrationally Excited Cationic Dicarboxylic Acid Clusters with Water Molecules Initiate Dissociation of Cluster Components Journal of Physical Chemistry A; Vol. 111; No. 27; https://doi.org/10.1021/jp0706580
Neidholdt, Evan L.; Beauchamp, J. L. (2007) Compact Ambient Pressure Pyroelectric Ion Source for Mass Spectrometry Analytical Chemistry; Vol. 79; No. 10; https://doi.org/10.1021/ac070261s
Kim, Hugh I.; Goddard, William A., III et al. (2006) Cluster Phase Chemistry: Gas-Phase Reactions of Anionic Sodium Salts of Dicarboxylic Acid Clusters with Water Molecules Journal of Physical Chemistry A; Vol. 110; No. 25; https://doi.org/10.1021/jp055944v
Grimm, Ronald L.; Hodyss, Robert et al. (2006) Probing Interfacial Chemistry of Single Droplets with Field-Induced Droplet Ionization Mass Spectrometry: Physical Adsorption of Polycyclic Aromatic Hydrocarbons and Ozonolysis of Oleic Acid and Related Compounds Analytical Chemistry; Vol. 78; No. 11; https://doi.org/10.1021/ac0601922
Hodyss, Robert; Cox, Heather A. et al. (2005) Bioconjugates for Tunable Peptide Fragmentation: Free Radical Initiated Peptide Sequencing (FRIPS) Journal of the American Chemical Society; Vol. 127; No. 36; https://doi.org/10.1021/ja052042z
Kim, Hugh I.; Johnson, Paul V. et al. (2005) Electrospray Ionization Ion Mobility Spectrometry of Carboxylate Anions: Ion Mobilities and a Mass−Mobility Correlation Journal of Physical Chemistry A; Vol. 109; No. 35; https://doi.org/10.1021/jp051274h
Hodyss, Robert; Beauchamp, J. L. (2005) Multidimensional Detection of Nitroorganic Explosives by Gas Chromatography-Pyrolysis-Ultraviolet Detection Analytical Chemistry; Vol. 77; No. 11; https://doi.org/10.1021/ac050308e
Grimm, Ronald L.; Beauchamp, J. L. (2005) Dynamics of Field-Induced Droplet Ionization: Time-Resolved Studies of Distortion, Jetting, and Progeny Formation from Charged and Neutral Methanol Droplets Exposed to Strong Electric Fields Journal of Physical Chemistry B; Vol. 109; No. 16; https://doi.org/10.1021/jp0450540
Cox, Heather A.; Hodyss, Robert et al. (2005) Cluster-Phase Reactions: Gas-Phase Phosphorylation of Peptides and Model Compounds with Triphosphate Anions Journal of the American Chemical Society; Vol. 127; No. 11; https://doi.org/10.1021/ja0452673
Suzumura, Atsuko; Paul, Dharam et al. (2005) Cytochromec−Crown Ether Complexes as Supramolecular Catalysts: Cold-Active Synzymes for Asymmetric Sulfoxide Oxidation in Methanol Inorganic Chemistry; Vol. 44; No. 4; https://doi.org/10.1021/ic0486567
Gao, Song; Ng, Nga L. et al. (2004) Particle Phase Acidity and Oligomer Formation in Secondary Organic Aerosol Environmental Science and Technology; Vol. 38; No. 24; https://doi.org/10.1021/es049125k
Hodyss, Robert; Cox, Heather A. et al. (2004) Cluster Phase Reactions: Alkylation of Triphosphate and DNA Anions with Alkylammonium Cations Journal of Physical Chemistry A; Vol. 108; No. 45; https://doi.org/10.1021/jp0475032
Austin, Daniel E.; Beauchamp, J. L. et al. (2004) A compact time-of-flight mass spectrometer for high-flux cosmic dust analysis Journal of Geophysical Research. Planets; Vol. 109; No. E7; https://doi.org/10.1029/2003JE002184
Cox, Heather A.; Julian, Ryan R. et al. (2004) Gas-Phase H/D Exchange of Sodiated Glycine Oligomers with ND_3: Exchange Kinetics Do Not Reflect Parent Ion Structures Journal of the American Chemical Society; Vol. 126; No. 20; https://doi.org/10.1021/ja049834y
Julian, Ryan R.; Beauchamp, J. L. (2004) Selective molecular recognition of arginine by anionic salt bridge formation with bis-phosphate crown ethers: implications for gas phase peptide acidity from adduct dissociation Journal of the American Society for Mass Spectrometry; Vol. 15; No. 4; https://doi.org/10.1016/j.jasms.2003.12.015
Grimm, Ronald L.; Beauchamp, J. L. (2003) Field-Induced Droplet Ionization Mass Spectrometry Journal of Physical Chemistry B; Vol. 107; No. 51; https://doi.org/10.1021/jp037099r
Julian, Ryan R.; Beauchamp, J. L. (2003) Abiotic synthesis of ATP from AMP in the gas phase: implications for the origin of biologically important molecules from small molecular clusters International Journal of Mass Spectrometry and Ion Processes; Vol. 227; No. 1; https://doi.org/10.1016/S1387-3806(03)00048-4
Austin, Daniel E.; Grimm, Ronald L. et al. (2003) Hypervelocity microparticle impact studies using a novel cosmic dust mass spectrometer Journal of Geophysical Research E; Vol. 108; No. E5; https://doi.org/10.1029/2002JE001947
Julian, Ryan R.; May, Jeremy A. et al. (2003) Gas-Phase Synthesis of Charged Copper and Silver Fischer Carbenes from Diazomalonates: Mechanistic and Conformational Considerations in Metal-Mediated Wolff Rearrangements Journal of the American Chemical Society; Vol. 125; No. 15; https://doi.org/10.1021/ja028337j
Julian, Ryan R.; May, Jeremy A. et al. (2003) Molecular Mousetraps: Gas-Phase Studies of the Covalent Coupling of Noncovalent Complexes Initiated by Reactive Carbenes Formed by Controlled Activation of Diazo Precursors Angewandte Chemie International Edition; Vol. 42; No. 9; https://doi.org/10.1002/anie.200390258
Ahrens, Thomas J.; Gupta, Satish C. et al. (2003) Mass spectrometer calibration of Cosmic Dust Analyzer Journal of Geophysical Research E; Vol. 108; No. E2; https://doi.org/10.1029/2002JE001912
Grimm, Ronald L.; Beauchamp, J. L. (2002) Evaporation and Discharge Dynamics of Highly Charged Droplets of Heptane, Octane, and p-Xylene Generated by Electrospray Ionization Analytical Chemistry; Vol. 74; No. 24; https://doi.org/10.1021/ac025889b
Smith, James N.; Flagan, Richard C. et al. (2002) Droplet Evaporation and Discharge Dynamics in Electrospray Ionization Journal of Physical Chemistry A; Vol. 106; No. 42; https://doi.org/10.1021/jp025723e
Julian, Ryan R.; Beauchamp, Jesse L. (2002) The unusually high proton affinity of Aza-18-crown-6 ether: Implications for the molecular recognition of lysine in peptides by lariat crown ethers Journal of the American Society for Mass Spectrometry; Vol. 13; No. 5; https://doi.org/10.1016/s1044-0305(02)00368-9
Julian, Ryan R.; Hodyss, Robert et al. (2002) Nanocrystalline Aggregation of Serine Detected by Electrospray Ionization Mass Spectrometry: Origin of the Stable Homochiral Gas-Phase Serine Octamer Journal of Physical Chemistry B; Vol. 106; No. 6; https://doi.org/10.1021/jp012265l
Austin, Daniel E.; Ahrens, Thomas J. et al. (2002) Dustbuster: a compact impact-ionization time-of-flight mass spectrometer for in situ analysis of cosmic dust Review of Scientific Instruments; Vol. 73; No. 1; https://doi.org/10.1063/1.1427762
Hodyss, Robert; Julian, Ryan R. et al. (2001) Spontaneous chiral separation in noncovalent molecular clusters Chirality; Vol. 13; No. 10; In: 12th International Symposium on Chiral Discrimination, September 2000, Chamonix‐Mont Blanc, Switzerland https://doi.org/10.1002/chir.10021
Julian, Ryan R.; Beauchamp, J. L. (2001) Site specific sequestering and stabilization of charge in peptides by supramolecular adduct formation with 18-crown-6 ether by way of electrospray ionization International Journal of Mass Spectrometry and Ion Processes; Vol. 210-211; https://doi.org/10.1016/S1387-3806(01)00431-6
Julian, Ryan R.; Hodyss, Robert et al. (2001) Salt Bridge Stabilization of Charged Zwitterionic Arginine Aggregates in the Gas Phase Journal of the American Chemical Society; Vol. 123; No. 15; https://doi.org/10.1021/ja003105a
Kossakovski, Dmitri; Beauchamp, J. L. (2000) Topographical and Chemical Microanalysis of Surfaces with a Scanning Probe Microscope and Laser-Induced Breakdown Spectroscopy Analytical Chemistry; Vol. 72; No. 19; https://doi.org/10.1021/ac0005058
Lee, Sang-Won; Cox, Heather et al. (2000) Chemistry in Nanodroplets: Studies of Protonation Sites of Substituted Anilines in Water Clusters Using FT-ICR Journal of the American Chemical Society; Vol. 122; No. 38; https://doi.org/10.1021/ja0009875
Jyoti, G.; Gupta, Satish C. et al. (2000) Mass spectrometer calibration of Cosmic Dust Analyzer In: Shock compression of condensed matter--1999 : proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter held at Snowbird, Utah, June 27-July 2, 1999; Series AIP Conference Proceedings; No. 505; https://resolver.caltech.edu/CaltechAUTHORS:JYOaipcp00
Jyoti, G.; Gupta, Satish C. et al. (1999) Mass spectrometer calibration of high velocity impact ionization based cosmic dust analyzer International Journal of Impact Engineering; Vol. 23; No. 1; In: 1998 Hypervelocity Impact Symposium, 16-19 November 1998, Huntsville, AL https://doi.org/10.1016/S0734-743X(99)00090-1
Lee, Sang-Won; Chang, Sukbok et al. (1999) Slow Evaporation of Water from Hydrated Salen Transition Metal Complexes in the Gas Phase Reveals Details of Metal Ligand Interactions Journal of the American Chemical Society; Vol. 121; No. 43; https://doi.org/10.1021/ja991658j
Unger, M. A.; Kossakovski, D. A. et al. (1998) Etched chalcogenide fibers for near-field infrared scanning microscopy Review of Scientific Instruments; Vol. 69; No. 8; https://doi.org/10.1063/1.1149045
Crellin, Kevin C.; Dalleska, Nathan et al. (1997) Chemical ionization of the nitrate ester explosives EGDN and PETN by trimethylsilyl cation and comparison of the reactivity of nitrate ester and nitro explosives toward trimethylsilyl cation International Journal of Mass Spectrometry and Ion Processes; Vol. 165-166; https://doi.org/10.1016/S0168-1176(97)00189-4
Crellin, Kevin C.; Widmer, M. et al. (1997) Chemical Ionization of TNT and RDX with Trimethylsilyl Cation Analytical Chemistry; Vol. 69; No. 6; https://doi.org/10.1021/ac961003q
Crellin, Kevin C.; Beauchamp, J. L. et al. (1996) σ-Bond Metathesis Reactions of Sc(CH_3)_2^+ with Secondary C−H Bonds: Reactivity with Cyclohexane and Cyclopentane Organometallics; Vol. 15; No. 25; https://doi.org/10.1021/om960489y
Crellin, Kevin C.; Geribaldi, Serge et al. (1995) [Group and Site Selective σ-Bond Metathesis Reactions of CH_3ScCH_2CH_3^+ with [2,2-D_2]Propane, 1,1,1,4,4,4-D_6]-n-Butane, [2-D]-Isobutane, and n-Pentane Organometallics; Vol. 14; No. 9; https://doi.org/10.1021/om00009a046
Murthy, Srihari; Beauchamp, J. L. (1995) Fourier Transform Ion Cyclotron Resonance Spectrometric Studies of Lewis Acid-Base Chemistry in Monochlorosilane Journal of Physical Chemistry; Vol. 99; No. 22; https://doi.org/10.1021/j100022a025
Crellin, Kevin C.; Geribaldi, Serge et al. (1994) [Site Selective σ-Bond Metathesis Reactions of Sc(CD_3)_2^+ with [2,2-D_2]Propane, 1,1,1,4,4,4-D_6]-n-Butane, and [2-D]Isobutane Organometallics; Vol. 13; No. 9; https://doi.org/10.1021/om00021a054
Marzluff, Elaine M.; Campbell, Sherrie et al. (1994) Low-Energy Dissociation Pathways of Small Deprotonated Peptides in the Gas Phase Journal of the American Chemical Society; Vol. 116; No. 17; https://doi.org/10.1021/ja00096a040
Marzluff, Elaine M.; Campbell, Sherrie et al. (1994) Collisional Activation of Large Molecules Is an Efficient Process Journal of the American Chemical Society; Vol. 116; No. 15; https://doi.org/10.1021/ja00094a064
Campbell, Sherrie; Marzluff, Elaine M. et al. (1994) Proton Affinities and Photoelectron Spectra of Phenylalanine and N-Methyl- and N,N-Dimethylphenylalanine. Correlation of Lone Pair Ionization Energies with Proton Affinities and Implications for N-Methylation as a Method to Effect Site Specific Protonation of Peptides Journal of the American Chemical Society; Vol. 116; No. 12; https://doi.org/10.1021/ja00091a033
Campbell, Sherrie; Beauchamp, J. L. (1992) Infrared laser multiphoton dissociation of proton-bound dimers of biomolecules: a new method to probe the acid-base properties of local sites in complex molecules In: Applied Spectroscopy in Materials Science II; Series Proceedings of SPIE; No. 1636; In: OE/LASE '92, 19-24 January 1992, Los Angeles, CA https://doi.org/10.1117/12.59313
Murthy, Srihari; Nagano, Yatsuhisa et al. (1992) Electron impact ionization of phenylsilane. Evidence for the formation of phenylsilyl and silacycloheptatrienyl cations Journal of the American Chemical Society; Vol. 114; No. 9; https://doi.org/10.1021/ja00035a072
Irikura, Karl K.; Goddard, W. A., III et al. (1992) Singlet-triplet gaps in substituted carbenes CXY (X, Y = H, F, Cl, Br, I, SiH_3) Journal of the American Chemical Society; Vol. 114; No. 1; https://doi.org/10.1021/ja00027a006
Shin, Seung Koo; Beauchamp, J. L. (1991) Infrared multiphoton dissociation spectrum of CF_3Mn(CO)_4I^- Journal of Molecular Structure; Vol. 249; No. 1; https://doi.org/10.1016/0022-2860(91)85050-D
Wight, Charles A.; Beauchamp, J. L. (1990) Infrared spectra of butenyl anions: multiphoton electron detachment as a photochemical probe of isomeric structures of gas phase anions International Journal of Mass Spectrometry and Ion Processes; Vol. 100; https://doi.org/10.1016/0168-1176(90)85087-I
Shin, Seung Koo; Goddard, William A., III et al. (1990) Singlet-triplet energy gaps in fluorine-substituted methylenes and silylenes Journal of Chemical Physics; Vol. 93; No. 7; https://doi.org/10.1063/1.458636
Shin, Seung Koo; Goddard, William A., III et al. (1990) Singlet-triplet energy gaps in chlorine-substituted methylenes and silylenes Journal of Physical Chemistry; Vol. 94; No. 18; https://doi.org/10.1021/j100381a010
van Koppen, Petra A. M.; Bowers, Michael T. et al. (1990) Organometallic Reaction Energetics from Product Kinetic Energy Release Distributions In: Bonding Energetics in Organometallic Compounds; Series ACS Symposium Series; No. 428; https://doi.org/10.1021/bk-1990-0428.ch003
Shin, Seung Koo; Beauchamp, J. L. (1990) Infrared multiphoton dissociation spectrum of CF_3Mn(CO)_3(NO)^- Journal of the American Chemical Society; Vol. 112; No. 6; https://doi.org/10.1021/ja00162a004
Shin, Seung Koo; Beauchamp, J. L. (1990) Identification of Mn(CO)_nCF_3^- (n = 4, 5) structural isomers by IR multiphoton dissociation, collision-induced dissociation, and specific ligand displacement reactions: studies of the trifluoromethyl migratory decarbonylation reaction in the gas phase Journal of the American Chemical Society; Vol. 112; No. 6; https://doi.org/10.1021/ja00162a003
Wight, Charles A.; Beauchamp, J. L. (1989) Multiphoton electron detachment studies of C_7H_7− using a low-power infrared laser. Competition of radiative and collisional relaxation with vibrational excitation Chemical Physics; Vol. 134; No. 2-3; https://doi.org/10.1016/0301-0104(89)87169-1
Kang, H.; Beauchamp, J. L. (1986) Gas-phase studies of alkane oxidation by transition-metal oxides. Selective oxidation by CrO⁺ Journal of the American Chemical Society; Vol. 108; No. 24; https://doi.org/10.1021/ja00284a011
Tolbert, M. A.; Beauchamp, J. L. (1986) Mechanistic and kinetic study of alkane activation by Ti⁺ and V⁺ in the gas phase. Lifetimes of reaction intermediates Journal of the American Chemical Society; Vol. 108; No. 24; https://doi.org/10.1021/ja00284a012
Tolbert, M. A.; Mandich, M. L. et al. (1986) Activation of alkanes by ruthenium, rhodium, and palladium ions in the gas phase: striking differences in reactivity of first- and second-row metal ions Journal of the American Chemical Society; Vol. 108; No. 19; https://doi.org/10.1021/ja00279a003
Kang, H.; Beauchamp, J. L. (1986) Gas-phase studies of alkene oxidation by transition-metal oxides. Ion-beam studies of CrO⁺ Journal of the American Chemical Society; Vol. 108; No. 19; https://doi.org/10.1021/ja00279a001
Kang, Heon; Jacobson, Denley B. et al. (1986) Reactions of transition-metal ions with methylsilanes in the gas phase. The formation and characteristics of strong transition metal-silylene bonds Journal of the American Chemical Society; Vol. 108; No. 19; https://doi.org/10.1021/ja00279a002
Kruppa, Gary H.; Beauchamp, J. L. (1986) Energetics and structure of the 1- and 2-adamantyl radicals and their corresponding carbonium ions by photoelectron spectroscopy Journal of the American Chemical Society; Vol. 108; No. 9; https://doi.org/10.1021/ja00269a007
Hanratty, M. A.; Carter, E. A. et al. (1986) Electronic states of chromium carbene ions characterized by high-resolution translational energy loss spectroscopy Chemical Physics Letters; Vol. 123; No. 4; https://doi.org/10.1016/0009-2614(86)80064-1
Wight, Charles A.; Beauchamp, J. L. (1984) Infrared laser photodetachment of electrons from vibrationally excited allyl anions Journal of Physical Chemistry; Vol. 88; No. 19; https://doi.org/10.1021/j150663a049
George, Patricia M.; Beauchamp, J. L. (1982) Dissociative electron attachment reactions of transition metal carbonyls and their apparent influence on the thermalization of electrons by CO2 Journal of Chemical Physics; Vol. 76; No. 6; https://doi.org/10.1063/1.443389
Armentrout, P. B.; Halle, L. F. et al. (1982) Reaction of Cr + , Mn + , Fe + , Co + , and Ni + with O2 and N2O. Examination of the translational energy dependence of the cross sections of endothermic reactions Journal of Chemical Physics; Vol. 76; No. 5; https://doi.org/10.1063/1.443274
Wight, Charles A.; Beauchamp, J. L. (1981) Infrared spectra of gas-phase ions and their use in elucidating reaction mechanisms. Identification of C_7H_7- structural isomers by multiphoton electron detachment using a low-power infrared laser Journal of the American Chemical Society; Vol. 103; No. 21; https://doi.org/10.1021/ja00411a042
Armentrout, P. B.; Halle, L. F. et al. (1981) Periodic trends in transition metal-hydrogen, metal-carbon, and metal-oxygen bond dissociation energies. Correlation with reactivity and electronic structure Journal of the American Chemical Society; Vol. 103; No. 21; https://doi.org/10.1021/ja00411a043
Thorne, L. R.; Beauchamp, J. L. (1981) Efficient multiphoton dissociation of CF3I+ in the metastable X-tilde 2E1/2 excited state using cw infrared laser radiation Journal of Chemical Physics; Vol. 74; No. 9; https://doi.org/10.1063/1.44171
Armentrout, P. B.; Beauchamp, J. L. (1981) Cobalt carbene ion: Reactions of Co+ with C2H4, cyclo-C3H6, and cyclo-C2H4O Journal of Chemical Physics; Vol. 74; No. 5; https://doi.org/10.1063/1.441453
Casassa, Michael P.; Bomse, David S. et al. (1980) Infrared photochemistry of ethylene clusters Journal of Chemical Physics; Vol. 72; No. 12; https://doi.org/10.1063/1.439174
Woodin, R. L.; Foster, M. S. et al. (1980) Ion cyclotron resonance studies of radiative and dissociative electron attachment processes at low pressures Journal of Chemical Physics; Vol. 72; No. 7; https://doi.org/10.1063/1.439653
George, Patricia M.; Swanson, Mark N. et al. (1979) Simple pressure gauge for uranium hexafluoride Review of Scientific Instruments; Vol. 50; No. 12; https://doi.org/10.1063/1.1135745
Bomse, D. S.; Woodin, R. L. et al. (1978) Multiphoton dissociation of molecules with low power CW infrared lasers In: Advances in Laser Chemistry; Series Springer Series in Chemical Physics ; No. 3; In: Conference on Advances in Laser Chemistry, 20-22 March 1978, Pasadena, CA https://doi.org/10.1007/978-3-642-67054-1_36
Murphy, M. K.; Beauchamp, J. L. (1977) Fluorine and alkyl substituent effects on the gas-phase Lewis acidities of boranes by ion cyclotron resonance spectroscopy Inorganic Chemistry; Vol. 16; No. 10; https://doi.org/10.1021/ic50176a003
Armentrout, P. B.; Hodges, R. V. et al. (1977) Endothermic reactions of uranium ions with N2, D2, and CD4 Journal of Chemical Physics; Vol. 66; No. 10; https://doi.org/10.1063/1.433678
Corderman, Reed R.; LeBreton, P. R. et al. (1976) Photoionization and ion cyclotron resonance studies of the ion chemistry of ethylene oxide Journal of Chemical Physics; Vol. 65; No. 11; https://doi.org/10.1063/1.432969
Williamson, Ashley D.; Beauchamp, J. L. (1976) Ion molecule reactions in vinyl fluoride by photoionization. Effects of vibrational excitation on major reaction pathways Journal of Chemical Physics; Vol. 65; No. 8; https://doi.org/10.1063/1.433491
Ridge, D. P.; Beauchamp, J. L. (1976) The interaction of ions with nonpolar neutrals: The collision broadening of ion cyclotron resonance lines of ions in hydrogen and methane Journal of Chemical Physics; Vol. 64; No. 7; https://doi.org/10.1063/1.432596
Beauchamp, J. L. (1976) Ion cyclotron resonance studies of endothermic reactions of UF6- generated by surface ionization Journal of Chemical Physics; Vol. 64; No. 3; https://doi.org/10.1063/1.432285
Beauchamp, J. L. (1976) Properties and reactions of uranium hexafluoride by ion cyclotron resonance spectroscopy Journal of Chemical Physics; Vol. 64; No. 2; https://doi.org/10.1063/1.432217
Staley, Ralph H.; Harding, Lawrence B. et al. (1975) Triplet states of the amide group. Trapped electron spectra of formamide and related molecules Chemical Physics Letters; Vol. 36; No. 5; https://doi.org/10.1016/0009-2614(75)85345-0
Mosher, Oren A.; Foster, Michael S. et al. (1975) Electronic spectroscopy of trans-azomethane by electron impact Journal of Chemical Physics; Vol. 62; No. 9; https://doi.org/10.1063/1.430976
Staley, Ralph H.; Beauchamp, J. L. (1975) Equilibrium studies of gas phase ion-molecule reactions. Ion cyclotron resonance results for the reaction CO_2H+ + CH_4 ⇄ CH+_5 + CO_2 Journal of Chemical Physics; Vol. 62; No. 5; https://doi.org/10.1063/1.430652
LeBreton, P. R.; Williamson, A. D. et al. (1975) Photoionization and ion cyclotron resonance studies of the reaction C2H4+ + C2H4 → C3H5+ + CH3 Journal of Chemical Physics; Vol. 62; No. 5; https://doi.org/10.1063/1.430713
McMahon, T. B.; Beauchamp, J. L. (1971) Determination of Ion Transit Times in an Ion Cyclotron Resonance Spectrometer Review of Scientific Instruments; Vol. 42; No. 11; https://doi.org/10.1063/1.1684956
Beauchamp, J. L. (1971) Ion Cyclotron Resonance Spectroscopy Annual Review of Physical Chemistry; Vol. 22; https://doi.org/10.1146/annurev.pc.22.100171.002523
Holtz, David; Beauchamp, J. L. (1971) Xenon as a Nucleophile in Gas-Phase Displacement Reactions: Formation of the Methyl Xenonium Ion Science; Vol. 173; No. 4003; https://doi.org/10.1126/science.173.4003.1237
Ridge, Douglas P.; Beauchamp, J. L. (1969) Application of Ion Cyclotron Resonance to the Study of Inelastic Excitation by Low-Energy Electrons Journal of Chemical Physics; Vol. 51; No. 1; https://doi.org/10.1063/1.1671764
Beauchamp, J. L.; Armstrong, John T. (1969) An Ion Ejection Technique for the Study of Ion-Molecule Reactions with Ion Cyclotron Resonance Spectroscopy Review of Scientific Instruments; Vol. 40; No. 1; https://doi.org/10.1063/1.1683704
Beauchamp, J. L.; Buttrill, S. E., Jr. (1968) Proton Affinities of H2S and H2O Journal of Chemical Physics; Vol. 48; No. 4; https://doi.org/10.1063/1.1668912
Beauchamp, J. L. (1967) Theory of Collision-Broadened Ion Cyclotron Resonance Spectra Journal of Chemical Physics; Vol. 46; No. 4; https://doi.org/10.1063/1.1840841
Anders, L. R.; Beauchamp, J. L. et al. (1966) Ion-Cyclotron Double Resonance Journal of Chemical Physics; Vol. 45; No. 3; https://doi.org/10.1063/1.1727658
Whitesides, George M.; Beauchamp, Jesse L. et al. (1963) Relative Signs of the ^(31)P-^1H and ^(31)P-C-^1H Nuclear Magnetic Resonance Coupling Constants Journal of the American Chemical Society; Vol. 85; No. 17; https://doi.org/10.1021/ja00900a032