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Luminescent Metallacycle‐Cored Liquid Crystals Induced by Metal Coordination
Author(s) -
Chen Long,
Chen Changlong,
Sun Yue,
Lu Shuai,
Huo Haohui,
Tan Tianyi,
Li Anquan,
Li Xiaopeng,
Ungar Goran,
Liu Feng,
Zhang Mingming
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201915055
Subject(s) - thermotropic crystal , luminescence , mesogen , supramolecular chemistry , liquid crystal , materials science , intermolecular force , crystallography , metal , metallacycle , nanotechnology , crystal structure , chemistry , liquid crystalline , molecule , organic chemistry , x ray crystallography , optoelectronics , optics , physics , diffraction , metallurgy
Two rhomboidal metallacycles based on metal‐coordination‐driven self‐assembly are presented. Because metal‐coordination interactions restrict the rotation of phenyl groups on tetraphenylethene units, these metallacycles were emissive both in solution and in solid state, and their aggregation‐induced emission properties were well‐retained. Moreover, the rhomboidal metallacyclic structures offer a platform for intermolecular packing beneficial for the formation of liquid crystalline phases. Therefore, although neither of building blocks shows mesogenic properties, both thermotropic and lyotropic (in DMF) mesophases were observed in one of metallacycles, indicating that mesophases could be induced by metal‐coordination interactions. This study not only reveals the mechanism for the formation of cavity‐cored liquid crystals, but also provides a convenient approach to preparing supramolecular luminescent liquid crystals, which will serve as good candidates for chemo sensors and liquid crystal displays.