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Updated: Jul 4, 2025

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通过可见光光催化剂实现的细胞内合成

Cinzia D'Avino1, Sara Gutiérrez1, Max J Feldhaus1

  • 1Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15705 Santiago de Compostela, Spain.

Journal of the American Chemical Society
|January 26, 2024
PubMed
概括

科学家们使用光催化剂开发了一种新的生物对角化学方法, 这种进步为研究和控制生物过程的新方法提供了潜在的生物医学应用.

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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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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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