超分子化学
聚合物
材料科学
超分子手性
纳米晶
偶氮苯
超分子聚合物
发光
极化(电化学)
手性(物理)
纳米技术
化学工程
晶体结构
结晶学
光电子学
化学
复合材料
物理化学
夸克
手征对称破缺
工程类
物理
Nambu–Jona Lasinio模型
量子力学
作者
Mingcong Xu,Guangyao Li,Wei Li,Bang An,Jiaming Sun,Zhijun Chen,Haipeng Yu,Jian Li,Guang Yang,Shouxin Liu
标识
DOI:10.1002/ange.202117042
摘要
Abstract Circularly polarized light (CPL) is key to asymmetric photochemistry as it could impart the chiral organization information into chemical products. Here, we demonstrate the circular polarization capacity of chiral cellulose nanocrystal (CNC) films to trigger photo‐alignment of achiral supramolecular polymers into helical structures. Right‐handed transmitted (T‐) CPL was generated from self‐assembled CNC films, which induced amorphous azobenzene (Azo) supramolecular polymers into chiral structures. The chiral induction effect of T‐CPL is enhanced on Azo polymers with longer spacers. The absorptive dissymmetry factor ( g abs ) values of liquid‐crystal supramolecular polymers can be amplified significantly (over 10 times) after T‐CPL irradiation. Moreover, by integrating carbon dots into CNC films, CPL emission with a considerable luminescence dissymmetry factor ( g lum ) up to −0.66 was achieved, and it could be used for the photo‐alignment of Azo polymers with high chiroptical properties. This work provides new insight for the photo modulation of supramolecular polymers by CPL‐active materials.
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