An efficient blue thermally activated delayed fluorescence material based on 4-fluorocyanobenzene derivative for organic light-emitting diodes

Jie Zhang; Jie Li; Weihua Chen; Ding Zheng; Junsheng Yu; Hua Wang; Bingshe Xu

doi:10.1016/j.tetlet.2016.03.097

An efficient blue thermally activated delayed fluorescence material based on 4-fluorocyanobenzene derivative for organic light-emitting diodes

Jie Zhang, Jie Li^*, Weihua Chen, Ding Zheng, Junsheng Yu, Hua Wang, Bingshe Xu

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

A D-A structured thermally activated delayed fluorescence (TADF) emitter, CyFbCz, was developed. The combination of 4-fluorocyanophenyl acceptor and carbazolyl donor resulted in an appropriate energy gap for efficient blue emitting. The well separated HOMO and LUMO contributed to a small ΔE_ST (0.09 eV) and effective reverse intersystem crossing from lowest triplet state (T₁) to singlet state (S₁). The OLED with CyFbCz dopant achieved a maximum luminance of 2526.8 cd/m², a maximum current efficiency of 6.64 cd/A, and a CIE coordinate of (0.18, 0.13).

Original language	English (US)
Pages (from-to)	2044-2048
Number of pages	5
Journal	Tetrahedron Letters
Volume	57
Issue number	19
DOIs	https://doi.org/10.1016/j.tetlet.2016.03.097
State	Published - May 11 2016

Funding

This work was financially supported by the “Program for New Century Excellent Talents ( NCET ) in University” ( NCET-13-0927 ), the National Natural Science Foundation of China ( 21071108 , 21101111 , 61274056 , 61205179 , 61307030 , 61307029 ), the Qualified Personnel Foundation of Taiyuan University of Technology (QPFT) (No:tyutrc-201255a), and the Shanxi Provincial Key Innovative Research Team in Science and Technology ( 2012041011 ).

Keywords

4-Fluorocyanobenzene
Blue-light emission
OLED
TADF

ASJC Scopus subject areas

Biochemistry
Drug Discovery
Organic Chemistry

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10.1016/j.tetlet.2016.03.097

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title = "An efficient blue thermally activated delayed fluorescence material based on 4-fluorocyanobenzene derivative for organic light-emitting diodes",

abstract = "A D-A structured thermally activated delayed fluorescence (TADF) emitter, CyFbCz, was developed. The combination of 4-fluorocyanophenyl acceptor and carbazolyl donor resulted in an appropriate energy gap for efficient blue emitting. The well separated HOMO and LUMO contributed to a small ΔEST (0.09 eV) and effective reverse intersystem crossing from lowest triplet state (T1) to singlet state (S1). The OLED with CyFbCz dopant achieved a maximum luminance of 2526.8 cd/m2, a maximum current efficiency of 6.64 cd/A, and a CIE coordinate of (0.18, 0.13).",

keywords = "4-Fluorocyanobenzene, Blue-light emission, OLED, TADF",

author = "Jie Zhang and Jie Li and Weihua Chen and Ding Zheng and Junsheng Yu and Hua Wang and Bingshe Xu",

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T1 - An efficient blue thermally activated delayed fluorescence material based on 4-fluorocyanobenzene derivative for organic light-emitting diodes

AU - Zhang, Jie

AU - Li, Jie

AU - Chen, Weihua

AU - Zheng, Ding

AU - Yu, Junsheng

AU - Wang, Hua

AU - Xu, Bingshe

PY - 2016/5/11

Y1 - 2016/5/11

N2 - A D-A structured thermally activated delayed fluorescence (TADF) emitter, CyFbCz, was developed. The combination of 4-fluorocyanophenyl acceptor and carbazolyl donor resulted in an appropriate energy gap for efficient blue emitting. The well separated HOMO and LUMO contributed to a small ΔEST (0.09 eV) and effective reverse intersystem crossing from lowest triplet state (T1) to singlet state (S1). The OLED with CyFbCz dopant achieved a maximum luminance of 2526.8 cd/m2, a maximum current efficiency of 6.64 cd/A, and a CIE coordinate of (0.18, 0.13).

AB - A D-A structured thermally activated delayed fluorescence (TADF) emitter, CyFbCz, was developed. The combination of 4-fluorocyanophenyl acceptor and carbazolyl donor resulted in an appropriate energy gap for efficient blue emitting. The well separated HOMO and LUMO contributed to a small ΔEST (0.09 eV) and effective reverse intersystem crossing from lowest triplet state (T1) to singlet state (S1). The OLED with CyFbCz dopant achieved a maximum luminance of 2526.8 cd/m2, a maximum current efficiency of 6.64 cd/A, and a CIE coordinate of (0.18, 0.13).

KW - 4-Fluorocyanobenzene

KW - Blue-light emission

KW - OLED

KW - TADF

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JF - Tetrahedron Letters

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An efficient blue thermally activated delayed fluorescence material based on 4-fluorocyanobenzene derivative for organic light-emitting diodes

Abstract

Funding

Keywords

ASJC Scopus subject areas

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