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Updated: Feb 24, 2026

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基于氨酸的超分子镜的结构调制,以实现高效和选择性的光催化

Haotian Shi1, Junjuan Shi1,2, Manman Dai1

  • 1State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin 130012, P.R. China.

The journal of physical chemistry letters
|February 23, 2026
PubMed
概括

研究人员使用氨酸图案开发了超分子镜,以增强光催化氧化. 通过增加氨酸之间的距离,它们提高了效率并抑制了聚合,从而导致选择性硫化物转化为硫氧化物.

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Photochemical Electrocyclic Reactions: Stereochemistry

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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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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