期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 25, 页码 10143-10150出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201915055
关键词
aggregation-induced emission; liquid crystals; metal coordination; self-assembly; supramolecular chemistry
资金
- National Natural Science Foundation of China [21801203, 21761132033, 21374086] Funding Source: Medline
- Shanxi Provincial Key Research and Development Project [2019KW-019, 2016KW-050, 2018KWZ-03] Funding Source: Medline
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.
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