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Vibrational spectroscopy of bare and solvated ionic complexes of biological relevance
| Venue: | Mass Spectrom. Rev. 2009 |
| Citations: | 6 - 3 self |
BibTeX
@ARTICLE{Polfer_vibrationalspectroscopy,
author = {Nick C. Polfer and Jos Oomens},
title = {Vibrational spectroscopy of bare and solvated ionic complexes of biological relevance},
journal = {Mass Spectrom. Rev. 2009},
year = {},
pages = {468--494}
}
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Abstract
The low density of ions in mass spectrometers generally precludes direct infrared (IR) absorption measurements. The IR spectrum of an ion can nonetheless be obtained by inducing photodissociation of the ion using a high-intensity tunable laser. The emergence of free electron lasers (FELs) and recent breakthroughs in bench-top lasers based on nonlinear optics have now made it possible to routinely record IR spectra of gas-phase ions. As the energy of one IR photon is insufficient to cause dissociation of molecules and strongly bound complexes, two main experimental strategies have been developed to effect photodissociation. In infrared multiple-photon dissociation (IR-MPD) many photons are absorbed resonantly and their energy is stored in the bath of vibrational modes, leading to dissociation. In the ‘‘messenger’ ’ technique a weakly bound van der Waals atom is detached upon absorption of a single photon.
Keyphrases
vibrational spectroscopy ionic complex biological relevance ir spectrum main experimental strategy free electron laser recent breakthrough absorption measurement vibrational mode infrared multiple-photon dissociation nonlinear optic single photon gas-phase ion effect photodissociation low density messenger technique mass spectrometer bench-top laser ir photon high-intensity tunable laser many photon
