Abstract

In the review, the spectral and photochemical manifestations of the catalytic effect of a weakly bound environment on photoprocesses involving oxygen in a gas, solutions, and on the surface are examined in historical sequence. The progress in an experimental study of the nature of supramolecular photochemistry of weakly bound oxygen complexes associated with the use of X–O₂ van der Waals complexes generated in molecular beams as a model system is considered. A review of the results of studying supramolecular photochemistry in X–O₂ complexes using the velocity map imaging of photofragments is given. The nature of the “dramatic” enhancement of UV absorption in weakly bound oxygen complexes and the mechanism of photochemical processes provided by the “enhanced” absorption are discussed. Available experimental data and conclusions on the nature of absorption bands appearing in weakly bound X–O₂ complexes, which give rise to the formation of singlet oxygen and other photooxidation intermediates, are considered.

中文翻译：

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分子氧的弱束缚环境作为光氧化的催化剂

摘要

在审查中，按历史顺序检查了弱结合环境对涉及气体，溶液和表面中氧气的光过程的催化作用的光谱和光化学表现。考虑到与分子束中产生的X–O ₂范德华配合物有关的弱结合氧配合物的超分子光化学性质的实验研究进展，被认为是一种模型系统。X–O ₂中超分子光化学研究结果综述给出了使用碎片的速度图成像的复合物。讨论了在弱结合的氧络合物中“剧烈”增强UV吸收的性质以及“增强”吸收提供的光化学过程的机理。考虑了可用的实验数据和弱结合X–O ₂络合物中出现的吸收带的性质的结论，这些吸收带导致形成单线态氧和其他光氧化中间体。