Vacuum Ultraviolet Photoionization of Complex Chemical Systems

被引：58

作者：

Kostko, Oleg ^{[1
]}

Bandyopadhyay, Biswajit ^{[1
]}

Ahmed, Musahid ^{[1
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA

来源：

ANNUAL REVIEW OF PHYSICAL CHEMISTRY, VOL 67 | 2016年 / 67卷

关键词：

mass spectrometry; synchrotron; hydrogen bonds; combustion; proton transfer; laser ablation; thermochemistry; electronic structure; LOW-TEMPERATURE OXIDATION; POTENTIAL-ENERGY SURFACE; GAS-PHASE KINETICS; VUV PHOTOIONIZATION; IONIZATION ENERGIES; MASS-SPECTROMETRY; SYNCHROTRON-RADIATION; COMBUSTION CHEMISTRY; TRANSITION-METAL; PHOTOELECTRON-SPECTROSCOPY;

D O I：

10.1146/annurev-physchem-040215-112553

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Tunable vacuum ultraviolet (VUV) radiation coupled to mass spectrometry is applied to the study of complex chemical systems. The identification of novel reactive intermediates and radicals is revealed in flame, pulsed photolysis, and pyrolysis reactors, leading to the elucidation of spectroscopy, reaction mechanisms, and kinetics. Mass-resolved threshold photoelectron photoion coincidence measurements provide unprecedented access to vibrationally resolved spectra of free radicals present in high-temperature reactors. Photoionization measurements in water clusters, nucleic acid base dimers, and their complexes with water provide signatures of proton transfer in hydrogen-bonded and p-stacked systems. Experimental and theoretical methods to track ion-molecule reactions and fragmentation pathways in intermolecular and intramolecular hydrogen-bonded systems in sugars and alcohols are described. Photoionization of laser-ablated molecules, clusters, and their reaction products inform thermodynamics and spectroscopy that are relevant to astrochemistry and catalysis. New directions in coupling VUV radiation to interrogate complex chemical systems are discussed.

引用

页码：19 / 40

页数：22

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