Reversible modulation of circularly polarized luminescence in chiral molecular cage-based supramolecular assemblies

IF 7.4 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Science China Materials Pub Date : 2025-08-13 DOI:10.1007/s40843-025-3611-3

Jianqiu Li (, ), Ran-Qi Chen (, ), Taowei Zhu (, ), Xiaoyan Wang (, ), Xiaonian Xue (, ), Huang Wu (, ), Dechao Geng (, ), Yu Wang (, )

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引用次数: 0

Abstract

Supramolecular materials exhibiting reversible circularly polarized luminescence (CPL) are of great interest for their potential applications in the development of 3D display technology and information encryption. In this work, we synthesize a pair of molecular cage enantiomers constructed from (2R)/(2S)-diaminocyclohexane-functionalized naphthalenediimide units ((4R/S)Cy-NDIDA) and fluorescent tris(4-formylphenyl)amine (TPA) components. The cage exhibits extremely weak fluorescence emission in both liquid and solid states. Notably, the introduction of tris(pentafluorophenyl)borane (TFPB) as a guest molecule gradually activates the photoluminescence (PL) and CPL signals of the chiral cage via host-guest interaction. Furthermore, photochromic diarylethene (DAE) is incorporated into the system. The reversible isomerization of DAE under light irradiation enables dynamic control of Förster resonance energy transfer (FRET) interactions with the host-guest complex, resulting in switchable fluorescence quenching and recovery. This precise strategy for controlling dynamic CPL switching of the chiral molecular cage offers a novel strategy for the development of supramolecular CPL systems.

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手性分子笼超分子组合中圆偏振发光的可逆调制

具有可逆圆偏振发光（CPL）的超分子材料在三维显示技术和信息加密领域具有潜在的应用前景。在这项工作中，我们合成了一对由(2R)/(2S)-二氨基环己烷功能化的萘二亚胺单元（(4R/S)Cy-NDIDA）和荧光三（4-甲酰苯基）胺（TPA）组成的分子笼对映体。该笼在液体和固体状态下均表现出极弱的荧光发射。值得一提的是，三（五氟苯基）硼烷（TFPB）作为客体分子的引入，通过主客体相互作用逐渐激活了手性笼的光致发光（PL）和CPL信号。此外，还加入了光致变色二乙烯（DAE）。DAE在光照射下的可逆异构化可以动态控制Förster共振能量转移（FRET）与主客体复合物的相互作用，从而实现可切换的荧光猝灭和恢复。这种精确控制手性分子笼动态CPL开关的策略为超分子CPL系统的发展提供了一种新的策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science China Materials Materials Science-General Materials Science

CiteScore

11.40

自引率

7.40%

发文量

949

期刊介绍： Science China Materials (SCM) is a globally peer-reviewed journal that covers all facets of materials science. It is supervised by the Chinese Academy of Sciences and co-sponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China. The journal is jointly published monthly in both printed and electronic forms by Science China Press and Springer. The aim of SCM is to encourage communication of high-quality, innovative research results at the cutting-edge interface of materials science with chemistry, physics, biology, and engineering. It focuses on breakthroughs from around the world and aims to become a world-leading academic journal for materials science.