Stimuli-responsive cyclometalated platinum complex bearing bent molecular geometry for highly efficient solution-processable OLEDs

被引：32

作者：

Wei, Zhenhua ^{[1
,4
]}

Zhang, Kai ^{[1
]}

Kim, Chan Kyung ^{[3
]}

Tan, Shuai ^{[1
,4
]}

Wang, Shaojie ^{[2
,6
]}

Wang, Lin ^{[2
,6
]}

Li, Jun ^{[5
]}

Wang, Yafei ^{[1
]}

机构：

[1] Changzhou Univ, Sch Mat Sci & Engn, Natl Expt Demonstrat Ctr Mat Sci & Engn,Jiangsu E, Jiangsu Collaborat Innovat Ctr Photovolta Sci & E, Changzhou 213164, Peoples R China

[2] Yanshan Univ, Ctr High Pressure Sci CHiPS, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China

[3] Inha Univ, Dept Chem & Chem Engn, Incheon 22212, South Korea

[4] Xiangtan Univ, Coll Chem, Xiangtan 411105, Peoples R China

[5] North Univ China, Sch Chem Engn & Technol, Taiyuan 030051, Peoples R China

[6] Ctr High Pressure Sci & Technol Adv Res, Shanghai 201203, Peoples R China

来源：

CHINESE CHEMICAL LETTERS | 2021年 / 32卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Stimuli responsive emission; Platinum complex; Solution-processable OLEDs; Synthesis and property;

D O I：

10.1016/j.cclet.2020.05.005

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Smart materials, such as stimuli-responsive luminescence, have attracted much attentions due to their potential application in semiconductor filed. In this context, platinum complexes of (dfppy-DC)Pt(acac) and (dfppy-O-DC)Pt(acac) were prepared and characterized, in which (2-(4',6'-difluorophenyl)pyridinato-N, C2')(2,4-pentanedionato-O,O)Pt(II) was used as the planar emission core and 9-(4-(phenylsulfonyl) phenyl)-9H-carbazole (DC) was regard as the bent pendent. Both platinum complexes showed bright emission in solution and solid state, concomitant with charming external-stimuli-responsive emission under mechanical grinding, organic solvent vapors and pressure. The change emission color spanned from yellow to near-infrared region. Using the platinum complexes as the dopant, solution processable organic light-emitting diodes (OLEDs) were fabricated and a maximum external quantum efficiency of similar to 18% was achieved, which is the highest value among the reported solution-processable OLEDs based on external-stimuli-responsive luminescence. This research demonstrated that platinum complex can show promising stimuli responsive emission via ingenious molecular design, indicating a novel way for developing the smart materials in semiconductor filed. (C) 2020 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.

引用

页码：493 / 496

页数：4

共 22 条

[1] Highly efficient phosphorescent emission from organic electroluminescent devices [J].