Multicolor Luminescence Switching and Controllable Thermally Activated Delayed Fluorescence Turn on/Turn off in Carbazole-Quinoxaline-Carbazole Triads

被引：86

作者：

Pashazadeh, Ramin ^{[1
]}

Pander, Piotr ^{[2
]}

Lazauskas, Algirdas ^{[3
]}

Dias, Fernando B. ^{[2
]}

Grazulevicius, Juozas V. ^{[1
]}

机构：

[1] Kaunas Univ Technol, Dept Polymer Chem & Technol, LT-50254 Kaunas, Lithuania

[2] Univ Durham, Dept Phys, South Rd, Durham DH1 3LE, England

[3] Kaunas Univ Technol, Inst Mat Sci, LT-50254 Kaunas, Lithuania

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2018年 / 9卷 / 05期

关键词：

LIGHT-EMITTING-DIODES; MECHANOCHROMIC LUMINESCENCE; CHARGE-TRANSFER; ELECTROLUMINESCENCE; DERIVATIVES; COMPLEXES; MOLECULES; EMITTERS; DESIGN; STATE;

D O I：

10.1021/acs.jpclett.8b00136

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：

We report a series of thermally activated delayed fluorescence (TADF) molecules with mechanochromic luminescence properties and reversible TADF turn on/off properties in solid state that are induced by the transition between amorphous and crystalline states. Additionally, multicolor altering through external stimulus is demonstrated. All of the studied compounds exhibited recovery of the initial states associated with narrower emission spectra. TADF organic light-emitting diodes fabricated by solution processing rendered high external quantum efficiency up to 10.9% and luminance of 16 760 cd m(-2).

引用

页码：1172 / 1177

页数：11

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