Pillar[6]arene-Based Photoresponsive Host–Guest Complexation
Guocan Yu(Zhejiang University), Chengyou Han(Zhejiang University), Zibin Zhang(Zhejiang University), Jianzhuang Chen(Zhejiang University), Xuzhou Yan(Zhejiang University), Bo Zheng(Zhejiang University), Shiyong Liu(University of Science and Technology of China), Feihe Huang(Zhejiang University)
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Abstract
The trans form of an azobenzene-containing guest can complex with a pillar[6]arene, while it cannot complex with pillar[5]arenes due to the different cavity sizes of the pillar[6]arene and the pillar[5]arenes. The spontaneous aggregation of its host-guest complex with the pillar[6]arene can be reversibly photocontrolled by irradiation with UV and visible light, leading to a switch between irregular aggregates and vesicle-like aggregates. This new pillar[6]arene-based photoresponsive host-guest recognition motif can work in organic solvents and is a good supplement to the existing widely used cyclodextrin/azobenzene recognition motif.
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