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

Hong Tao Cao; Chao Shen Hong; Dan Qing Ye; Li Hui Liu; Ling Hai Xie; Shu Fen Chen; Chen Sun; Sha Sha Wang; Hong Mei Zhang; Wei Huang

doi:10.1016/j.molstruc.2019.06.003

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

Hong Tao Cao, Chao Shen Hong, Dan Qing Ye, Li Hui Liu, Ling Hai Xie, Shu Fen Chen, Chen Sun, Sha Sha Wang, Hong Mei Zhang, Wei Huang

Institute of Flexible Electronics

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

11 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	132-138
Number of pages	7
Journal	Journal of Molecular Structure
Volume	1196
DOIs	https://doi.org/10.1016/j.molstruc.2019.06.003
State	Published - 15 Nov 2019

Keywords

Electron acceptor
Exciplex
Organic light-emitting diode
Spiro[fluorene-9,9′-xanthene]
Tetracyano-substitution
Thermally activated delayed fluorescence

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10.1016/j.molstruc.2019.06.003

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@article{91ce9a18e50a4565afe892be7380444a,

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

abstract = "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.",

keywords = "Electron acceptor, Exciplex, Organic light-emitting diode, Spiro[fluorene-9,9′-xanthene], Tetracyano-substitution, Thermally activated delayed fluorescence",

author = "Cao, {Hong Tao} and Hong, {Chao Shen} and Ye, {Dan Qing} and Liu, {Li Hui} and Xie, {Ling Hai} and Chen, {Shu Fen} and Chen Sun and Wang, {Sha Sha} and Zhang, {Hong Mei} and Wei Huang",

note = "Publisher Copyright: {\textcopyright} 2019",

year = "2019",

month = nov,

day = "15",

doi = "10.1016/j.molstruc.2019.06.003",

language = "英语",

volume = "1196",

pages = "132--138",

journal = "Journal of Molecular Structure",

issn = "0022-2860",

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T1 - Tetracyano-substituted spiro[fluorene-9,9′-xanthene] as electron acceptor for exciplex thermally activated delayed fluorescence

AU - Cao, Hong Tao

AU - Hong, Chao Shen

AU - Ye, Dan Qing

AU - Liu, Li Hui

AU - Xie, Ling Hai

AU - Chen, Shu Fen

AU - Sun, Chen

AU - Wang, Sha Sha

AU - Zhang, Hong Mei

AU - Huang, Wei

PY - 2019/11/15

Y1 - 2019/11/15

N2 - 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.

AB - 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.

KW - Electron acceptor

KW - Exciplex

KW - Organic light-emitting diode

KW - Spiro[fluorene-9,9′-xanthene]

KW - Tetracyano-substitution

KW - Thermally activated delayed fluorescence

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U2 - 10.1016/j.molstruc.2019.06.003

DO - 10.1016/j.molstruc.2019.06.003

M3 - 文章

AN - SCOPUS:85067871242

SN - 0022-2860

VL - 1196

SP - 132

EP - 138

JO - Journal of Molecular Structure

JF - Journal of Molecular Structure

ER -

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

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Keywords

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