Tetracyano-substituted spiro[fluorene-9,9′-xanthene] as electron acceptor for exciplex thermally activated delayed fluorescence

被引：10

作者：

Cao, Hong-Tao ^{[1
,2
]}

Hong, Chao-Shen ^{[1
,2
]}

Ye, Dan-Qing ^{[1
,2
]}

Liu, Li-Hui ^{[1
,2
]}

Xie, Ling-Hai ^{[1
,2
]}

Chen, Shu-Fen ^{[1
,2
]}

Sun, Chen ^{[1
,2
,4
]}

Wang, Sha-Sha ^{[1
,2
]}

Zhang, Hong-Mei ^{[1
,2
]}

Huang, Wei ^{[1
,2
,3
]}

机构：

[1] NUPT, CMSOD, CMSOD Key Lab Organ Elect & Informat Displays, 9 Wenyuan Rd, Nanjing 210023, Jiangsu, Peoples R China

[2] NUPT, Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, IAM, 9 Wenyuan Rd, Nanjing 210023, Jiangsu, Peoples R China

[3] NPU, SIFE, 127 West Youyi Rd, Xian 710072, Shaanxi, Peoples R China

[4] IMDEA Nanociencia, Madrid Inst Adv Studies Nanosci, Calle Faraday 9,Ciudad Univ, Canto Blanco 28049, Spain

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2019年 / 1196卷

关键词：

Spiro[fluorene-9,9 '-xanthene; Tetracyano-substitution; Electron acceptor; Thermally activated delayed fluorescence; Exciplex; Organic light-emitting diode; LIGHT-EMITTING-DIODES; IRIDIUM(III) COMPLEXES; HIGH-EFFICIENCY; EMITTERS; BLUE; MECHANISM; LIGANDS; DESIGN; OLEDS; FILMS;

D O I：

10.1016/j.molstruc.2019.06.003

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：

Herein, a tetracyano-substituted spiro[fluorene-9,9'-xanthene] (SFX) derivative, 2,3',6',7-tetracarbonitrile-SFX (TCNSFX) was conveniently synthesized as electron acceptor for combining with tris(4-carbazoyl-9-ylphenyl)amine (TCTA) as electron donor to form exciplex emitter. Subsequently, exciplex-TADF was successfully realized with photoluminescence quantum yield of 29% and electroluminescence efficiency of 6.0 cd A(-1) in TCTA:TCNSFX. The exciplex-TADF performance of TCTA:TCNSFX is related to the stronger electron-accepting ability through tetracyano-substitution and large driving force in the exciplex emission. Although the emission efficiencies are slightly low, this work enriches the design system of electron acceptors for exciplex-TADF, simultaneously offering an efficient and convenient approach to developing low-cost materials and devices for TADF. (C) 2019 Published by Elsevier B.V.

引用

页码：132 / 138

页数：7

共 41 条

[31] ORGANIC ELECTROLUMINESCENT DIODES [J].