Publications

2015

Synthesis, Characterization, and Nitrogenase-Relevant Reactions of an Iron Sulfide Complex with a Bridging Hydride

Nicholas Arnet, Thomas Dugan, Fabian Menges, Brandon Mercado, William Brennessel, Eckhard Bill, Mark Johnson, and Patrick Holland
J. Am. Chem. Soc. (Communication), Vol. 137, (41), pp. 13220-13223

Vibrational Signatures of Solvent-Mediated Deformation of the Ternary Core Ions in Size-Selected [MgSO4Mg(H2O)n=4-11]2+ Clusters

Joseph W. DePalma, Patrick J. Kelleher, Christopher J. Johnson, Joseph A. Fournier, and Mark A. Johnson
J. Phys. Chem. A., Vol. 119, (30), pp. 8294-8302

Snapshots of Proton Accommodation at a Microscopic Water Surface: Understanding the Vibrational Spectral Signatures of the Charge Defect in Cryogenically Cooled H+(H2O)n=2-28 Clusters

Joseph A. Fournier, Conrad T. Wolke, Mark A. Johnson, Tuguldur T. Odbadrakh, Kenneth D. Jordan, Shawn M. Kathmann, and Sotiris S. Xantheas
J. Phys. Chem. A. (Feature Article), Vol. 119, (36), pp. 9425-9440

Persistence of Dual Free Internal Rotation in the Helium “Tagged” NH4+(H2O)∙Hen=0-3 Ion-Molecule Complexes: Expanding the Case for Quantum Delocalization in He Tagging

Patrick J. Kelleher, Christopher J. Johnson, Joseph A. Fournier, Mark A. Johnson, and Anne B. McCoy
J. Phys. Chem. A, Vol. 119, pp. 4170-4176

Understanding the Ionic Liquid [NC4111][NTf2] from Individual Building Blocks: An IR-Spectroscopic Study

Kenny Hanke*, Matin Kaufmann, Gerhard Schwaab, Martina Havenith, Conrad Wolke*, Olga Gorlova, Mark A. Johnson, Bishnu Kar, Wolfram Sander, Elsa Sanchez-Garcia
Phys. Chem. Chem. Phys., Vol. 17, pp. 8518-8529

Comparison of the local binding motifs in the imidazolium-based ionic liquids [EMIM][BF4] and [EMMIM][BF4] through cryogenic ion vibrational predissociation spectroscopy: Unraveling the roles of anharmonicity and intermolecular interactions

Joseph A. Fournier, Conrad T. Wolke, Christopher J. Johnson, Anne B. McCoy, and Mark A. Johnson
J. Chem. Phys., Vol. 142, pp. 064306

Thermodynamics of Water Dimer Dissocation in the Primary Hydration Shell of the Iodide Ion with Temperature-Dependent Vibrational Predissociation Spectroscopy

Conrad T. Wolke, Fabian S. Menges, Niklas Totsch, Olga Gorlova, Joseph A. Fournier, Gary H. Weddle, Mark A. Johnson, Nadja Heine, Tim K. Esser, Harold Knorke, Knut R. Asmis, Anne B. McCoy, Daniel J. Arismendi-Arrieta, Rita Prosmiti, Francesco Paesani
J. Phys. Chem. A, Vol. 119, pp. 1859-1866

2014

Site-Specific Vibrational Spectral Signatures of Water Molecules in the Magic H3O+(H2O)20 and Cs+(H2O)20 Clusters

Joseph A. Fournier, Conrad T. Wolke, Christopher J. Johnson, Mark A. Johnson, Nadja Heine, Sandy Gewinner, Wieland Schöllkopf, Tim K. Esser, Matias R. Fagiani, Harald Knorke, Knut R. Asmis
Proc. Natl. Acad. Sci. USA, Vol. 111, (51), pp. 18132-18137

From Quantum Mechanics to Molecular Mechanics: A Tribute to Kenneth D. Jordan

Mark A. Johnson, Jack Simons, and Feng Wang
J. Phys. Chem. A, Vol. 118, (35), pp. 7167-7168

Microhydration of Contact Ion Pairs in M2+OH-(H2O)n=1-5 (M=Mg, Ca) Clusters: Spectral Manifestation of a Mobile Proton Defect in the First Hydration Shell

Christopher J. Johnson, Laura C. Dzugan, Arron B. Wolk, Christopher M. Leavitt, Joseph A. Fournier, Anne B. McCoy, and Mark A. Johnson
J. Phys. Chem. A, Vol. 118, pp. 7590-7597

Vibrational spectral signature of the proton defect in the three-dimensional H+(H2O)21 cluster

Joseph A. Fournier, Christopher J. Johnson, Conrad T. Wolke, Gary H. Weddle, Arron B. Wolk, and Mark A. Johnson
Science, Vol. 344, (6187), pp. 1009-1012

Ion Mobility Spectrometry, Infrared Dissociation Spectroscopy and ab initio Computations towards Structural Characterization of the Deprotonated Leucine Enkephalin Peptide Anion in the Gas-Phase

Florian Schinle, Christoph Jacob, Arron Wolk, Jean-Francois Greisch, Matthias Vonderach,Patrick Weis, Oliver Hampe, Mark Johnson, and Manfred Kappes
J. Phys. Chem. A, Vol. 118, pp. 8453

Communication: He-tagged vibrational spectra of the SarGlyH+ and H+(H2O)2,3 ions: Quantifying Tag Effects in Cryogenic Ion Vibrational Predissociation (CIVP) spectroscopy

Christopher J. Johnson, Arron B. Wolk, Joseph A. Fournier, Erin N. Sullivan, Gary H. Weddle, and Mark A. Johnson
J. Chem. Phys., Vol. 140, pp. 221101

On the Character of the Cyclic Ionic H-Bond in Cryogenically Cooled Deprotonated Cysteine

Andrew F. DeBlase, Steven R. Kass, and Mark A. Johnson
Phys. Chem. Chem. Phys., Vol. 16, pp. 4569

Modes of Activation of Organometallic Iridium Complexes for Catalytic Water and C-H Oxidation

Andrew J. Ingram, Arron B. Wolk, Cornelia Flender, Jialing Zhang, Christopher J. Johnson, Ulrich Hintermair, Robert H. Crabtree, Mark A. Johnson, Richard N. Zare
Inorg. Chem., Vol. 53, (1), pp. 423-433

Cryogenic Ion Chemistry and Spectroscopy

Arron B. Wolk, Christopher M. Leavitt, Etienne Garand, and Mark A. Johnson
Acc. Chem. Res., Vol. 47, (1), pp. 202-210

2013

Ionic liquids from the bottom up: Local assembly motifs in [EMIM][BF4] through cryogenic ion spectroscopy

Christopher J. Johnson, Joseph A. Fournier, Conrad T. Wolke, and Mark A. Johnson
J. Chem. Phys., Vol. 139, pp. 224305

Hiding in Plain Sight: Unmasking the Diffuse Spectral Signatures of the Protonated N-Terminus in Simple Peptides

Christopher M. Leavitt, Andrew F. DeBlase, Michael van Stipdonk, Anne B. McCoy, and Mark A. Johnson
J. Phys. Chem. Lett., Vol. 4, pp. 3450-3457

Integration of cryogenic ion vibrational predissociation spectroscopy with a mass spectrometric interface to an electrochemical cell

Joseph A. Fournier, Arron B. Wolk, and Mark A. Johnson
Anal. Chem., Vol. 85, (15), pp. 7339-7344

Vibrational Spectra and Fragmentation Pathways of Size-Selected, D2-Tagged Ammonium/Methylammonium Bisulfate Clusters

Christopher J. Johnson and Mark A. Johnson
J. Phys. Chem. A, Vol. 117, (50), pp. 13265-13274