Dyke John M
School of Chemistry, University of Southampton, SO17 1BJ, UK.
Phys Chem Chem Phys. 2019 May 8;21(18):9106-9136. doi: 10.1039/c9cp00623k.
Photoionization of reactive intermediates with synchrotron radiation has reached a sufficiently advanced stage of development that it can now contribute to a number of areas in gas-phase chemistry and physics. These include the detection and spectroscopic study of reactive intermediates produced by bimolecular reactions, photolysis, pyrolysis or discharge sources, and the monitoring of reactive intermediates in situ in environments such as flames. This review summarises advances in the study of reactive intermediates with synchrotron radiation using photoelectron spectroscopy (PES) and constant-ionic-state (CIS) methods with angular resolution, and threshold photoelectron spectroscopy (TPES), taking examples mainly from the recent work of the Southampton group. The aim is to focus on the main information to be obtained from the examples considered. As future research in this area also involves photoelectron-photoion coincidence (PEPICO) and threshold photoelectron-photoion coincidence (TPEPICO) spectroscopy, these methods are also described and previous related work on reactive intermediates with these techniques is summarised. The advantages of using PEPICO and TPEPICO to complement and extend TPES and angularly resolved PES and CIS studies on reactive intermediates are highlighted.
利用同步辐射对反应中间体进行光电离已发展到足够先进的阶段，现在它可以在气相化学和物理的多个领域发挥作用。这些领域包括对双分子反应、光解、热解或放电源产生的反应中间体的检测和光谱研究，以及在火焰等环境中对反应中间体进行原位监测。本综述总结了利用光电子能谱（PES）和具有角分辨率的恒定离子态（CIS）方法以及阈值光电子能谱（TPES）对反应中间体进行同步辐射研究的进展，主要以南安普顿小组的近期工作为例。目的是聚焦于从所考虑的例子中获得的主要信息。由于该领域的未来研究还涉及光电子 - 光离子符合（PEPICO）和阈值光电子 - 光离子符合（TPEPICO）光谱，因此也对这些方法进行了描述，并总结了以前使用这些技术对反应中间体进行的相关工作。强调了使用PEPICO和TPEPICO来补充和扩展对反应中间体的TPES以及角分辨PES和CIS研究的优势。
