Mass-selected IR-VUV (118 nm) spectroscopic studies of radicals, aliphatic molecules, and their clusters.
Mass-selected IR-VUV (118 nm) spectroscopic studies of radicals, aliphatic molecules, and their clusters.
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DOI：
10.1002/mas.21387
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发表时间：
2013-11
影响因子：
6.6
通讯作者：
Yongjun Hu;Jiwen Guan;E. Bernstein
中科院分区：
文献类型：
--
作者：
Yongjun Hu;Jiwen Guan;E. Bernstein
质量选择IR加上UV/VUV光谱和质谱已经耦合成一个强大的技术来研究自由基，分子和簇的化学，物理，结构和电子性质。使用真空紫外（VUV）辐射产生用于质谱的离子的优点是其适用于几乎所有电离势低于单个VUV光子能量的化合物，其避免了对UV发色团的要求，其不能消除背景气体，以及其大大降低的碎裂能力。在这篇综述中，质量选择IR加VUV（118 nm）光谱首先介绍了一般的方式。这种光谱学的应用实例，其中包括检测和结构分析的自由基，分子和分子簇在超音速射流。
Mass-selected IR plus UV/VUV spectroscopy and mass spectrometry have been coupled into a powerful technique to investigate chemical, physical, structural, and electronic properties of radicals, molecules, and clusters. Advantages of the use of vacuum ultraviolet (VUV) radiation to create ions for mass spectrometry are its application to nearly all compounds with ionization potentials below the energy of a single VUV photon, its circumventing the requirement of UV chromophore group, its inability to ionize background gases, and its greatly reduced fragmenting capabilities. In this review, mass-selected IR plus VUV (118 nm) spectroscopy is introduced first in a general manner. Selected application examples of this spectroscopy are presented, which include the detections and structural analysis of radicals, molecules, and molecular clusters in a supersonic jet.