A chiral photo-switch containing a dibenzothiophene skeleton and a preparation method and application thereof

CN122344183APending Publication Date: 2026-07-07SUZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SUZHOU UNIV
Filing Date
2026-06-08
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing overcrowded olefin photoswitches lack systematic structure-activity relationship guidance, the mechanism by which bottom substituents affect photochemical performance is unclear, and the synthetic routes are cumbersome, limiting their efficient design and large-scale application.

Method used

A chiral photoswitch containing a dibenzothiophene framework is provided. The optical properties of the bistable chiral photoswitch are affected by the stator 2,7-substituent effect. It can be combined with illumination and redox modulation, and the sulfur in the switch framework can be post-modified. It has excellent structural modifiability and functional group compatibility.

Benefits of technology

It achieves near-quantitative bidirectional light switching, breaking through the limitation of single light control of the original bistable chiral molecules. It has bistable properties in both solutions and liquid crystals and can undergo reversible changes at two wavelengths.

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Abstract

This invention discloses a chiral photoswitch containing a dibenzothiophene skeleton, its preparation method, and its application, having one of the structures shown in formulas S1-S14. Based on the influence of the stator 2,7-substituent effect on the photochemical properties of overcrowded olefin-derived bistable chiral photoswitches, this invention achieves near-quantitative bidirectional light switching. In addition to light-induced modulation, the photoswitch can also be modulated by redox reactions, and the sulfur in the switch skeleton can be further modified. It exhibits excellent structural modifiability and functional group compatibility, overcoming the limitations of single-light modulation in traditional bistable chiral molecules.
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