Enhanced circularly polarized luminescence from silica-coated self-assemblies of chiral tetraphenylethene-based amphiphiles

被引：9
作者：
Zhou, Ziqing [1 ]
Shi, Fengyun [1 ]
Li, Hongkun [1 ,2 ]
Yang, Yonggang [1 ]
Li, Yongfang [1 ]
机构：
[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou Key Lab Novel Semicond Optoelect Mat & Devi, Suzhou 215123, Peoples R China
[2] South China Univ Technol, Ctr Aggregat Induced Emiss, Key Lab Luminescence Mol Aggregates Guangdong Prov, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Peoples R China
来源：
DYES AND PIGMENTS | 2022年 / 203卷
基金：
中国国家自然科学基金;
关键词：
Circularly polarized luminescence; Aggregation-induced emission; Tetraphenylethene; Hybrid silica; Self-assembly; AGGREGATION-INDUCED EMISSION; CPL; INDUCTION; POLYMER; LIGHT;
D O I：
10.1016/j.dyepig.2022.110362
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
A pair of tetraphenylethene-based pyridinium salts with valine-containing attachments, TL and TD, were designed and synthesized. They emit faintly and give weak circular dichroism (CD) signals in dilute solutions, but show intense fluorescence and Cotton effects in aggregated state, displaying aggregation-induced emission (AIE) and CD (AICD) features. Their assemblies exhibit circular polarization luminescence (CPL) properties. Furthermore, the assemblies can be utilized as templates to fabricate twisted hybrid silica nanofibers through a supramolecular templating approach. Compared with the supramolecular assemblies, the obtained hybrid silicas show enhanced CPL activities and fluorescence efficiency due to the confinement effect of the silica frameworks.
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页数：8
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