Strong circularly polarized electroluminescence based on chiral salen-Zn(ii) complex monomer chromophores

被引：43

作者：

Chen, Yihan ^{[1
]}

Li, Xiaojing ^{[2
,3
]}

Li, Nengquan ^{[4
]}

Quan, Yiwu ^{[4
]}

Cheng, Yixiang ^{[2
,3
]}

Tang, Yanfeng ^{[1
]}

机构：

[1] Nantong Univ, Sch Chem & Chem Engn, Nantong 226019, Peoples R China

[2] Nanjing Univ, Sch Chem & Chem Engn, MOE, Key Lab Mesoscop Chem, Nanjing 210023, Jiangsu, Peoples R China

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

[4] Nanjing Univ, Sch Chem & Chem Engn, Dept Polymer Sci & Engn,Minist Educ, Key Lab High Performance Polymer Mat & Technol, Nanjing 210023, Jiangsu, Peoples R China

来源：

MATERIALS CHEMISTRY FRONTIERS | 2019年 / 3卷 / 05期

基金：

中国国家自然科学基金;

关键词：

ACTIVATED DELAYED FLUORESCENCE; LIGHT-EMITTING-DIODES; HIGHLY EFFICIENT; LANTHANIDE(III) COMPLEXES; LUMINESCENT ZINC(II); ELECTRONIC STATES; EXCITED-STATE; EMISSION; PHOTOLUMINESCENT; POLYMER;

D O I：

10.1039/c9qm00039a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this work, two chiral salen-Zn(ii) complex enantiomers (R-/S-ZnL) were shown to exhibit weak blue-green colored circularly polarized luminescence (CPL) signals with dissymmetry factors (g(em)) of the order of about 10(-3) both in THF solution and KBr pellet-dispersed state. The R-/S-ZnL enantiomers were used to fabricate circularly polarized organic light-emitting diodes, obtaining values of 1000 cd m(-2), 0.181 cd A(-1) and 0.074 lm W-1 for the maximum brightness, current efficiency and power efficiency, respectively, and the dissymmetry factor of the electroluminescent devices (g(EL)) could reach +/- 0.044 at around 490 nm. This study first reports circularly polarized electroluminescence (CP-EL) based on a salen-Zn(ii) complex chromophore, which can provide a new strategy for developing promising CP-EL materials.

引用

页码：867 / 873

页数：7

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