期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 3, 页码 785-790出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201811060
关键词
chirality; circularly polarized luminescence; nanostructures; self-assembly; superhelices
资金
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB12020200]
- Key Research Program of Frontier Sciences, CAS [QYZDJ-SSW-SLH044]
- National Natural Science Foundation of China [21773260, 21603043, 91427302, 21473219]
Photosensitive cinnamic acid conjugated glutamides were designed to demonstrate photocontrolled hierarchical chirality transfer and switching in self-assembled systems. In methanol, the cinnamic acid derivatives self-assembled into superhelices, which could be switched into nanokebabs upon UV irradiation. These two nanostructures showed opposite helicity. The chiral nanostructures could further convey their chirality to achiral fluorescent molecules and result in the emission of circularly polarized luminescence (CPL). Remarkably, the CPL followed the helicity of the chiral nanostructure rather than the inherent molecular chirality. Photodriven dimerization of the cinnamic moiety lead to a significant change in molecular packing and subsequent switching of the helicity of the formed nanostructures.
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