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Updated: Sep 19, 2025

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
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Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

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三维双碳醇基共价有机框架作为有效的叶格式光催化剂,用于二相系统中的H2O2生成

Aiguo Kong1, Tao Yang1, Hai Yan2

  • 1School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, P. R. China.

Journal of the American Chemical Society
|June 5, 2025
PubMed
概括

这项研究引入了一种新型的双相系统,用于使用无金属共价有机框架 (COF) 光催化剂高效的太阳能氧化物 (H2O2) 生产. 该系统抑制有害的中间体和催化剂降解,使得H2O2合成具有持久性.

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Cycloaddition Reactions: MO Requirements for Photochemical Activation

Some cycloaddition reactions are activated by heat, while others are initiated by light. For example, a [2 + 2] cycloaddition between two ethylene molecules occurs only in the presence of light. It is photochemically allowed but thermally forbidden.
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The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
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