Locking the phenyl rings of tetraphenylethene step by step: understanding the mechanism of aggregation-induced emission

Junqing Shi; Ning Chang; Cuihong Li; Ju Mei; Chunmei Deng; Xiaoliang Luo; Zhengping Liu; Zhishan Bo; Yong Qiang Dong; Ben Zhong Tang

doi:10.1039/C2CC35641D

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Chemical Communications

Issue 86, 2012

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Locking the phenyl rings of tetraphenylethene step by step: understanding the mechanism of aggregation-induced emission

Junqing Shi,^a Ning Chang,^a Cuihong Li,^a Ju Mei,^b Chunmei Deng,^c Xiaoliang Luo,^a Zhengping Liu,^a Zhishan Bo,^a Yong Qiang Dong*^a and Ben Zhong Tang*^b^d

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Corresponding authors

Department of Chemistry, Beijing Key Laboratory of Energy Conversion and Storage Materials, Beijing Normal University, Beijing, China
E-mail: dongyq@bnu.edu.cn ;
Tel: +86-10-5880-6896

Institute of Biomedical Macromolecules, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China

Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, 100190 Beijing, China

Department of Chemistry, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Hong Kong, China

Chem. Commun., 2012,48, 10675-10677

DOI: 10.1039/C2CC35641D
Received 03 Aug 2012, Accepted 11 Sep 2012
First published online 11 Sep 2012

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Stepwise locking of phenyl rings of tetraphenylethene increases the emission efficiency of luminogen solutions gradually, thus verifying the restriction of intramolecular rotation (RIR) mechanism of the aggregation induced emission phenomenon. The emission of the luminogen with one “O” bridge could be tuned reversibly in solid state through repeated heating and grinding.

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Locking the phenyl rings of tetraphenylethene step by step: understanding the mechanism of aggregation-induced emission

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