D-A Solid Emitter with Crowded and Remarkably Twisted Conformations Exhibiting Multifunctionality and Multicolor Mechanochromism

被引：124

作者：

Gong, Yongyang ^{[1
]}

Zhang, Yiren ^{[1
]}

Yuan, Wang Zhang ^{[1
]}

Sun, Jing Zhi ^{[2
]}

Zhang, Yongming ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Shanghai Key Lab Elect Insulat & Thermal Ageing, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China

[2] Zhejiang Univ, Dept Polymer Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2014年 / 118卷 / 20期

基金：

美国国家科学基金会;

关键词：

AGGREGATION-INDUCED EMISSION; INTRAMOLECULAR CHARGE-TRANSFER; HIGHLY-EFFICIENT; 2-PHOTON ABSORPTION; MOLECULAR MATERIALS; ELECTRON-TRANSFER; FLUORESCENCE; TETRAPHENYLETHENE; DESIGN; SINGLE;

D O I：

10.1021/jp500556p

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Multifunctional and mechanochromic optoelectronic materials are of significant importance in both academic and technical aspects. In this contribution, a novel D A conjugate (AN2TPAN), consisting of arylamine and two triphenylacrylonitrile (TPAN) units, with sterically crowded and remarkably twisted conformations, has been carefully designed and synthesized. It shows typical intramolecular charge transfer, aggregation-induced emission, and aggregation-enhanced two-photon absorption characteristics. Moreover, it exhibits more than three emission colors in the solid state upon mechanical grinding. Such multicolor mechanochromism for solid emitters under mild conditions is rarely reported. A multilayer nondoped OLED device of AN2TPAN is fabricated and performs excellently, whose maximal current and external quantum efficiencies are as high as 10.7 cd/A and 3.3%, respectively. The multifunctionality and multicolor mechanochromism of AN2TPAN make it promising in optoelectronic applications.

引用

页码：10998 / 11005

页数：8

共 44 条

[1] π-Conjugated Cyanostilbene Derivatives: A Unique Self-Assembly Motif for Molecular Nanostructures with Enhanced Emission and Transport [J].