个人简介

Terry McMahon's research program is directed toward the investigation of structure, energetic and reaction dynamics of gaseous ions. Most recently, the majority of his work has focussed on cluster ions. To carry out this research, he uses High Pressure Mass Spectrometry (HPMS) and Fourier Transform Ion Cyclotron Resonance (FTICR) spectrometers. He has been named University Professor and has received the F.P. Lossing and John C. Polanyi Awards in 2015. Gaseous ion energetics and structure Fourier transform ion cyclotron resonance spectrometry High pressure mass spectrometry Infrared multiple photon dissociation Ion-molecule reaction dynamics Dean of Science, 2007-2015 Department of Chemistry Review (University of Western Ontario), 2009 1974 Ph.D. Physical Chemistry, California Institute of Technology, Pasadena, CA, USA 1969 B.Sc., University of Alberta, AB

研究领域

The McMahon group investigates structures, energetics and reaction dynamics of gaseous ions. The majority of their work uses high pressure mass spectrometry (HPMS) to explore cluster ions. HPMS is uniquely suited for determining the energetics of gaseous ion-molecule equilibria, particularly those associated with ion-molecule clustering and exchange reactions. Using this technique, they have amassed a considerable database for the energetics and kinetics of a wide variety of cluster species. Over the past decade, they have also used the free electron laser at the Centre Laser Infrarouge d’Orsay (CLIO, Université Paris-Sud XI) to perform infrared multiple photon dissociation (IRMPD) spectroscopy experiments in the mid-infrared ‘fingerprint’ region. This is a form of consequence spectroscopy that allows detailed ion structures to be identified from characteristic absorption frequencies. These experiments are supported by high-performance quantum chemical calculations at Waterloo that help reveal the intrinsic properties of gas-phase ions.

The McMahon group investigates structures, energetics and reaction dynamics of gaseous ions. The majority of our work uses high pressure mass spectrometry (HPMS) to explore cluster ions. HPMS is uniquely suited for determining the energetics of gaseous ion-molecule equilibria, particularly those associated with ion-molecule clustering and exchange reactions. Using this technique we have amassed a considerable database for the energetics and kinetics of a wide variety of cluster species. Over the past decade, we have also used the free electron laser at the Centre Laser Infrarouge d’Orsay (CLIO, Université Paris-Sud XI) to perform infrared multiple photon dissociation (IRMPD) spectroscopy experiments in the mid-infrared ‘fingerprint’ region. This is a form of consequence spectroscopy that allows detailed ion structures to be identified from characteristic absorption frequencies. These experiments are supported by high-performance quantum chemical calculations at Waterloo that help reveal the intrinsic properties of gas-phase ions. Current projects are listed below.

近期论文

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W. S. Hopkins, R. A. Marta and T. B. McMahon, Mode-selective IRMPD of Proton-bound 3-trifluoromethylphenylalanine trimethylamine clusters, Phys. Chem. Chem. Phys., in press DOI: 10.1039/c5cp03517a (2015). W. S. Hopkins, P. J. J. Carr, D. Huang, K. P. Bishop, M. Burt, T. B. McMahon, V. Steinmetz and E. Fillion, Infrared-driven Charge-transfer in Transition Metal B12F12 Clusters, J. Phys. Chem. A., 119, 8469-8475 (2015). E. Kleisath, R. A. Marta, S. M Martens, J. K. Martens and T. B. McMahon, Structures and Energetics of Protonated Clusters of Methylamine with Phenylalanine Analogs, Characterized by Infrared Multiple Photon Dissociation Spectroscopy and Electronic Structure Calculations, J. Phys. Chem. A., 119, 6689-6702 (2015). T.B. McMahon and G. Ohanessian, Probing the Mechanisms and Dynamics of Gas Phase Hydrogen-Deuterium Exchange Reactions of Sodiated Polyglycines, Phys. Chem. Chem. Phys., 17, 4237-4249 (2015) K. Eldridge, R.Wu, J. K. Martens, and T. B. McMahon, Gas-Phase Solvation of Protonated Amino Acids by Methanol, J. Phys. Chem. A., 118, 11629-11640 (2014).