Induced Red Circularly Polarized Luminescence Emission Promoted by Intermolecular Fo''rster Resonance Energy Transfer through a Cholesteric Liquid Crystal Medium

被引：22

作者：

Xu, Dan ^{[1
,2
]}

Hua, Xinran ^{[1
,2
]}

Liu, Chao ^{[1
,2
]}

Luo, Jiaxin ^{[1
,2
]}

Zheng, Wen-Hua ^{[1
,2
]}

Cheng, Yixiang ^{[1
,2
]}

机构：

[1] Nanjing Univ, Sch Chem & Chem Engn, State Key Lab Coordinat Chem, Nanjing 210023, Peoples R China

[2] Nanjing Univ, Sch Chem & Chem Engn, Jiangsu Key Lab Adv Organ Mat, Nanjing 210023, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2023年 / 15卷 / 21期

基金：

中国国家自然科学基金;

关键词：

cholesteric liquid crystals; circularly polarized luminescence; Fo''rster resonance energy transfer; helicene; 2; 2]paracyclophane; ELECTROLUMINESCENCE; CHIRALITY;

D O I：

10.1021/acsami.3c04214

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this paper, planar chiral helicenes based on [2.2]-paracyclophanePCPH5 acted as both chiral inducers and energy donors to constructthe circularly polarized luminescence (CPL)-active ternary cholestericliquid crystals (T-N*-LCs) in a commercial nematic liquid crystal(SLC1717, N-LCs) medium. Induced red CPL emission based on the energyacceptor of the achiral polymer DTBTF8 could be successfully promotedby the intermolecular Fo''rster resonance energy transfer mechanism.The resulting T-N*-LCs can generate intensive CPL signals with g (lum) up to +0.70/-0.67. Interestingly,this kind of "on-off" CPL switching of T-N*-LCscan be manipulated by the applied direct current electric field.

引用

页码：25783 / 25790

页数：8

共 70 条

[1] Helical Polyacetylene: Asymmetric Polymerization in a Chiral Liquid-Crystal Field [J].