Recent Publications

As a graduate student, Prof. Bush investigated zwitterion formation in gas-phase biomolecules and the hydration of biomolecular and multiply charged ions. Although he no longer pursues these interests, related projects continue in the laboratory of Prof. Evan R. Williams.


25.       Sulfate Ion Patterns Water at Long Distances Jeremy T. O’Brien, James S. Prell, Matthew F. Bush, Evan R. Williams. J. Am. Chem. Soc. 2010132, 8248–8249.


24.       Hydration of Alkaline Earth Metal Dications: Effects of Metal Ion Size Determined Using Infrared Action Spectroscopy Matthew F. Bush, Jeremy T. O’Brien, James S. Prell, Chih-Che Wu, Richard J. Saykally, Evan R. Williams. J. Am. Chem. Soc. 2009131, 13270–13277.


23.       Proton Affinity and Zwitterion Stability: New Results from Infrared Spectroscopy and Theory of Cationized Lysine and Analogues in the Gas Phase Matthew F. Bush, Jos Oomens, Evan R. Williams. J. Phys. Chem. A 2008113, 431–438.


22.       Infrared Action Spectra of Ca2+(H2O)11–69 Exhibit Spectral Signatures for Condensed-Phase Structures with Increasing Cluster Size Matthew F. Bush, Richard J. Saykally, Evan R. Williams. J. Am. Chem. Soc. 2008130, 15482–15489.


21.       Alkali Metal Ion Binding to Glutamine and Glutamine Derivatives Investigated by Infrared Action Spectroscopy and Theory Matthew F. Bush, Jos Oomens, Richard J. Saykally, Evan R. Williams. J. Phys. Chem. A 2008,112, 8578–8584.


20.       Reactivity and Infrared Spectroscopy of Gaseous Hydrated Trivalent Metal Ions Matthew F. Bush, Richard J. Saykally, Evan R. Williams.J. Am. Chem. Soc. 2008130, 9122–9128.


19.       Effects of Alkaline Earth Metal Complexation on Amino Acid Zwitterion Stability: Results from Infrared Action Spectroscopy Matthew F. Bush, Jos Oomens, Richard J. Saykally, Evan R. Williams. J. Am. Chem. Soc. 2008130, 6463–6471.


18.       The Absolute Standard Hydrogen Electrode Potential Measured by Reduction of Aqueous Nanodrops in the Gas Phase William A. Donald, Ryan D. Leib, Jeremy T. O’Brien, Matthew F. Bush, Evan R. Williams. J. Am. Chem. Soc. 2008130, 3371–3381.


Infrared action and calculated spectra of cesiated arginine show evidence for the formation of the gas-phase zwitterion.

17.       Infrared Spectroscopy of Arginine Cation Complexes: Direct Observation of Gas-phase Zwitterions Matthew W. Forbes, Matthew F. Bush, Nick C. Polfer, Jos Oomens, Robert C. Dunbar, Evan R. Williams, Rebecca A. Jockusch. J. Phys. Chem. A 2007111, 11759–11770.


16.       One Water Molecule Stabilizes the Cationized Arginine Zwitterion Matthew F. Bush, James S. Prell, Richard J. Saykally, Evan R. Williams. J. Am. Chem. Soc. 2007129, 13544–13553.


15.       Hydration of the Calcium Dication: Evidence for Second Shell Formation from Infrared Spectroscopy Matthew F. Bush, Richard J. Saykally, Evan R. Williams. ChemPhysChem 20078, 2245–2253. (cover article)


14.       Infrared Spectroscopy of Cationized Lysine and e-N-methyl-lysine in the Gas Phase: Effects of Alkali Metal Ion Size and Proton Affinity on Zwitterion Stability Matthew F. Bush, Matthew W. Forbes, Rebecca A. Jockusch, Jos Oomens, Nick C. Polfer, Richard J. Saykally, Evan R. Williams. J. Phys. Chem. A 2007111, 7753–7760.


13.       Reduction Potential of 1 M Aqueous Ruthenium(III) Hexaamine in the Gas Phase: A Route Towards Establishing an Absolute Electrochemical Potential Ryan D. Leib, William A. Donald, Jeremy T. O’Brien, Matthew F. Bush, Evan R. Williams. J. Am. Chem. Soc. 2007129, 7716–7717.


Fragmentation channels for hydrated divalent alkaline earth metal ions.

12.       Nonergodicity in Electron Capture Dissociation Investigated Using Hydrated Ion Nanocalorimetry Ryan D. Leib, William A. Donald, Matthew F. Bush, Jeremy T. O’Brien, Evan R. Williams. J. Am. Soc. Mass Spectrom. 200718, 1217–1231.


11.       Internal Energy Deposition in Electron Capture Dissociation Measured using Hydrated Divalent Metal Ions as Nanocalorimeters Ryan D. Leib, William A. Donald, Matthew F. Bush, Jeremy T. O’Brien, Evan R. Williams. J. Am. Chem. Soc. 2007129, 4894–4895.


10.       Evidence for Water Rings in the Hexahydrated Sulfate Dianion from IR Spectroscopy Matthew F. Bush, Richard J. Saykally, Evan R. Williams. J. Am. Chem. Soc. 2007129, 2220–2221.


9.         Infrared Spectroscopy of Cationized Arginine in the Gas Phase: Direct Evidence for the Transition from Nonzwitterionic to Zwitterionic Structure Matthew F. Bush, Jeremy T. O’Brien, James S. Prell, Richard J. Saykally, Evan R. Williams. J. Am. Chem. Soc. 2007129, 1612–1622.


Lithiated lysine structural isomerization.

8.         Structures of Lithiated Lysine and Structural Analogues in the Gas Phase: Effects of Water and Proton Affinity on Zwitterionic Stability Andrew S. Lemoff, Matthew F. Bush, Jeremy T. O’Brien, Evan R. Williams. J. Phys. Chem. A 2006110, 8433–8442.


Electrospray interface.

7.         Formation of Hydrated Triply Charged Metal Ions from Aqueous Solutions using Nanodrop Mass Spectrometry Matthew F. Bush, Richard J. Saykally, Evan R. Williams. Int. J. Mass Spectrom. 2006253, 256–262.


6.         Binding Energies of Water to Doubly Hydrated Cationized Glutamine and Structural Analogues in the Gas Phase Andrew S. Lemoff, Chih-Che Wu, Matthew F. Bush, Evan R. Williams. J. Phys. Chem. A 2006,110, 3662–3669.


5.         Infrared Spectroscopy of hydrated amino acids in the gas phase: protonated and lithiated valine Anthi Kamariotis, Oleg V. Boyarkin, Sébastien R. Mercier, Rainer D. Beck , Matthew F. Bush, Evan R. Williams, Thomas R. Rizzo. J. Am. Chem. Soc. 2006128, 905–916.


Arrhenius plot of singly hydrated, alkali metal cationized glutamine ions.

4.         Structures and hydration enthalpies of cationized glutamine and structural analogues in the gas phase Andrew S. Lemoff, Matthew F. Bush, Chih-Che Wu, Evan R. Williams. J. Am. Chem. Soc. 2005127, 10276–10286.


Zwitterionic and Nonzwitterionic Structures of Proline

3.         Structures of cationized proline analogues: Evidence for the Zwitterionic form Andrew S. Lemoff, Matthew F. Bush, Evan R. Williams.J. Phys. Chem. A 2005109, 1903–1910.


2.         Noncovalent Biomolecule Complexes Both Large and Small Evan R. Williams, John C. Jurchen, David E. Garcia, Andrew S. Lemoff, Matthew F. Bush. Adv. Mass Spectrom. 200416, 79–94. Request Reprint


1.         Binding energies of water to sodiated valine and structural isomers in the gas phase: The effect of proton affinity on zwitterion stability Andrew S. Lemoff, Matthew F. Bush, Chih-Che Wu, Evan R. Williams. J. Am. Chem. Soc. 2003125, 13576–13584.


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