Publications

2024

Hydrogen Tag Shifts as Vibrational Reporters for Positional Isomers of Formylphenides: Surprising Mobility of the Carbanion Center Upon Collisional Decarboxylation of the Parent Benzoates

Olivia C. Moss, Tim Schleif, Joseph P. Messinger, Anna G. Rullán Buxó, Kim Greis, Evan H. Perez, Mark A. Johnson
J. Phys. Chem. Lett., Vol. 15, (7), pp. 1969-1974

Measuring the Electric Fields of Ions Captured in Crown Ethers

Anwesha Maitra, William R. Lake, Ahmed Mohamed, Sean C. Edington, Pratyusha Das, Barry C. Thompson, Sharon Hammes-Schiffer, Mark Johnson, and Jahan M. Dawlaty

Spectroscopic evidence for doubly hydrogen-bonded cationic dimers in the solid, liquid and the gaseous phases of carboxyl-functionalized ionic liquids

Hunger, Lasse; Al Sheakh, Loai; Fritsch, Sebastian; Villinger, Alexander; Ludwig, Ralf; Harville, Payten; Moss, Olivia; Lachowicz, Anton; Johnson, Mark
Submitted , Vol. N/A, pp. N/A

2023

Characterization of the oxazolone and macrocyclic motifs in the bn (n = 2-5) product ions from CID of protonated oligoglycine peptides with isomer-selective, cryogenic vibrational spectroscopy

Ahmed Mohamed, Abhijit Rana, Evan Perez, Franziska Dahlmann, Allison Fry, Fabian S. Menges, Michael van Stipdonk, Svenja Jaeger, Mark A. Boyer, Anne B. McCoy, Mark A. Johnson
JASMS, Vol. 35, (2), pp. 326-332

Intra-cluster charge migration upon hydration of protonated formic acid revealed by anharmonic analysis of cold ion vibrational spectra

Thien Khuu, Tim Schleif, Ahmed Mohamed, Sayoni Mitra, Jesus Valdiviezo, Joseph P. Heindel, Teresa Head-Gordon, and Mark A. Johnson
J. Phys. Chem. A, Vol. 127, (36, Marsha Lester Festschrift), pp. 7501-7509

Characterization of Oxidation Products from HOCl Uptake by Microhydrated Methionine Anions using Cryogenic Ion Vibrational Spectroscopy

Santino J. Stropoli, Kim Greis, Tim Schleif, and Mark A. Johnson
J. Phys. Chem. A, Vol. 127, (19), pp. 4269–4276

Observation of Slow Eigen-Zundel Interconversion in H+(H2O)6 Clusters upon Isomer-Selective Vibrational Excitation and Buffer Gas Cooling in a Cryogenic Ion Trap

Thien Khuu, Abhijit Rana, Sean C. Edington, Nan Yang, Anne B. McCoy, Mark A. Johnson
J. Am. Soc. Mass Spectrom., Vol. 34, (4), pp. 737-744

Spectroscopic Characterization of Divalent Metal Docking Motif to Isolated Cyanobenzoate: Direct Observation of Tridentate Binding to Ortho-Cyanobenzoate and Implications for the CN Response

Ahmed Mohamed, Sean C. Edington, Maxim Secor, James R. Breton, Sharon Hammes-Schiffer and Mark A. Johnson
J. Phys. Chem. A, Vol. 137, (6, Special Issue Honoring Michael R. Berman), pp. 1413–1421

High-resolution vibrational predissociation spectroscopy of I- H2O by single-mode CW infrared excitation in a 3D cryogenic ion trap

Payten Harville, Sean Edington, Olivia C. Moss, Meng Huang, Anne McCoy, Mark Johnson
Molecular Physics Issue Dedicated to Prof. Dr. Dieter Gerlich, pp. e2174784

A Tribute to Michael R. Berman

Emily A. Carter, Mark A. Johnson, and Stephen R. Leone

2022

Effects of Microhydration on the Mechanisms of Hydrolysis and Cl- Substitution in Reactions of N2O5 and Seawater

Laura M. McCaslin, Andreas W. Götz, Mark A. Johnson, and R. Benny Gerber
ChemPhysChem , Vol. 24, pp. e2022008

Structures and Chemical Rearrangements of Benzoate Derivatives Following Gas Phase Decarboxylation

Evan H. Perez, Tim Schleif, Joseph P. Messinger, Anna G. Rullán Buxó, Olivia C. Moss, Kim Greis, and Mark A. Johnson
J. Am. Soc. Mass Spectrom., Vol. 33, (10), pp. 1914-1920

Microhydration of the metastable N-Protomer of 4-Aminobenzoic acid by condensation at 80K: H/D exchange without conversion to the more stable O-protomer

Thien Khuu, Santino J. Stropoli, Kim Greis, Nan Yang, Mark A. Johnson
J. Chem. Phys., Vol. 157, pp. 131102

Character of the OH Bend–Stretch Combination Band in the Vibrational Spectra of the “Magic” Number H3O+(H2O)20 and D3O+(D2O)20 Cluster Ions

Nan Yang, Rachel M. Huchmala, Anne B. McCoy*, and Mark A. Johnson*
J. Phys. Chem. Let., Vol. 13, (34), pp. 8116-8121

Gas Phase Reactivity of Ozone with Lanthanide Ions (Sm+, Nd+) and Their Higher Oxides

Brendan Sweeny, Michael Heaven, Anton Lachowicz, Mark Johnson, Albert Viggiano, Nicholas Shuman, and Shaun Ard
J. Am. Soc. Mass Spectrom. , Vol. 33, (8), pp. 1401-1410

Water Network Shape-Dependence of Local Interactions with the Microhydrated –NO2 and –CO2 Anionic Head Groups by Cold Ion Vibrational Spectroscopy

Sayoni Mitra, Joanna K. Denton, Patrick J. Kelleher, Timothy L. Guasco, Tae Hoon Choi, Kenneth D. Jordan and Mark A. Johnson
J. Phys. Chem. A , Vol. 126, (16), pp. 2471-2479

Electronic and mechanical anharmonicities in the vibrational spectra of the H-bonded, cryogenically cooled X∙HOCl (X=Cl, Br, I) complexes: Characterization of the strong anionic H-bond to an acidic OH group

Santino J. Stropoli, Thien Khuu, Mark A. Boyer, Natalia V. Karimova, Coire F. Gavin-Hanner, Sayoni Mitra, Anton L. Lachowicz, Nan Yang, R. Benny Gerber, Anne B. McCoy, and Mark A. Johnson
J. Chem. Phys., Vol. 156, pp. 174303

Preparation and Characterization of the Halogen Bonding Motif in the Isolated Cl∙IOH Complex with Cryogenic Ion Vibrational Spectroscopy

Santino J. Stropoli, Thien Khuu, Joseph P. Messinger, Natalia V. Karimova, Mark A. Boyer, Itai Zakai, Sayoni Mitra, Anton L. Lachowicz, Nan Yang, Sean C. Edington, R. Benny Gerber, Anne B. McCoy, and Mark A. Johnson
J. Phys. Chem. Lett. , Vol. 13, (12), pp. 2750-2756

Vibrational signatures of HNO3 acidity when complexed with microhydrated alkali metal ions, M+∙(HNO3)(H2O)n=5 (M=Li, K, Na, Rb, Cs), at 20 K

Sayoni Mitra, Thien Khuu,Tae Hoon Choi, Rachel M. Huchmala, Kenneth D. Jordan, Anne B. McCoy and Mark A. Johnson
J. Phys. Chem. A (ACS Editor's Pick), Vol. 126, (10), pp. 1640–1647

2021

On the hydrogen oxalate binding motifs onto dinuclear coinage metal phosphine complexes

Björn Kwasigroch, Thien Khuu, Evan H. Perez, Joanna K. Denton, Erik Schneider, Annika Steiner, Marvin Theisen; Sebastian Kruppa, Patrick Weis, Manfred Kappes, Christoph Riehn, Mark A. Johnson, and Gereon Niedner-Schatteburg
Chem. Eur. J., Vol. 27, (56), pp. 13894-14138