The inductive-effect of electron withdrawing trifluoromethyl for thermally activated delayed fluorescence: Tunable emission from tetra- to penta-carbazole in solution processed blue OLEDs

Ling Mei; Jia Hu; Xudong Cao; Fangfang Wang; Chao Zheng; Youtian Tao; Xinwen Zhang; Wei Huang

doi:10.1039/c5cc04126k

The inductive-effect of electron withdrawing trifluoromethyl for thermally activated delayed fluorescence: Tunable emission from tetra- to penta-carbazole in solution processed blue OLEDs

Ling Mei, Jia Hu, Xudong Cao, Fangfang Wang, Chao Zheng, Youtian Tao, Xinwen Zhang, Wei Huang

SCHOOL OF FLEXIBLE ELECTRONICS(FUTURE TECHNOLOGIES)|INSTITUTE OF ADVANCED MATERIALS(IAM)

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92 Scopus citations

Abstract

The non-conjugated inductive effect of trifluoromethyl (CF₃) was found to be a new acceptor instead of other conjugated moieties. Two blue emissive compounds, 4CzCF₃Ph and 5CzCF₃Ph, were synthesized using a simple catalyst-free C-N coupling reaction. Solution-processed TADF devices based on the 5CzCF₃Ph dopant exhibit significantly higher efficiency (11.8 cd A^-1, 5.2%) than 4CzCF₃Ph (1.03 cd A^-1, 0.67%) due to the smaller ΔE_ST value for efficient RISC.

Original language	English
Pages (from-to)	13024-13027
Number of pages	4
Journal	Chemical Communications
Volume	51
Issue number	65
DOIs	https://doi.org/10.1039/c5cc04126k
State	Published - 21 Aug 2015

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title = "The inductive-effect of electron withdrawing trifluoromethyl for thermally activated delayed fluorescence: Tunable emission from tetra- to penta-carbazole in solution processed blue OLEDs",

abstract = "The non-conjugated inductive effect of trifluoromethyl (CF3) was found to be a new acceptor instead of other conjugated moieties. Two blue emissive compounds, 4CzCF3Ph and 5CzCF3Ph, were synthesized using a simple catalyst-free C-N coupling reaction. Solution-processed TADF devices based on the 5CzCF3Ph dopant exhibit significantly higher efficiency (11.8 cd A-1, 5.2%) than 4CzCF3Ph (1.03 cd A-1, 0.67%) due to the smaller ΔEST value for efficient RISC.",

author = "Ling Mei and Jia Hu and Xudong Cao and Fangfang Wang and Chao Zheng and Youtian Tao and Xinwen Zhang and Wei Huang",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2015.",

year = "2015",

month = aug,

day = "21",

doi = "10.1039/c5cc04126k",

language = "英语",

volume = "51",

pages = "13024--13027",

journal = "Chemical Communications",

issn = "1359-7345",

publisher = "Royal Society of Chemistry",

number = "65",

}

The inductive-effect of electron withdrawing trifluoromethyl for thermally activated delayed fluorescence: Tunable emission from tetra- to penta-carbazole in solution processed blue OLEDs. / Mei, Ling; Hu, Jia; Cao, Xudong et al.
In: Chemical Communications, Vol. 51, No. 65, 21.08.2015, p. 13024-13027.

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

TY - JOUR

T1 - The inductive-effect of electron withdrawing trifluoromethyl for thermally activated delayed fluorescence

T2 - Tunable emission from tetra- to penta-carbazole in solution processed blue OLEDs

AU - Mei, Ling

AU - Hu, Jia

AU - Cao, Xudong

AU - Wang, Fangfang

AU - Zheng, Chao

AU - Tao, Youtian

AU - Zhang, Xinwen

AU - Huang, Wei

PY - 2015/8/21

Y1 - 2015/8/21

N2 - The non-conjugated inductive effect of trifluoromethyl (CF3) was found to be a new acceptor instead of other conjugated moieties. Two blue emissive compounds, 4CzCF3Ph and 5CzCF3Ph, were synthesized using a simple catalyst-free C-N coupling reaction. Solution-processed TADF devices based on the 5CzCF3Ph dopant exhibit significantly higher efficiency (11.8 cd A-1, 5.2%) than 4CzCF3Ph (1.03 cd A-1, 0.67%) due to the smaller ΔEST value for efficient RISC.

AB - The non-conjugated inductive effect of trifluoromethyl (CF3) was found to be a new acceptor instead of other conjugated moieties. Two blue emissive compounds, 4CzCF3Ph and 5CzCF3Ph, were synthesized using a simple catalyst-free C-N coupling reaction. Solution-processed TADF devices based on the 5CzCF3Ph dopant exhibit significantly higher efficiency (11.8 cd A-1, 5.2%) than 4CzCF3Ph (1.03 cd A-1, 0.67%) due to the smaller ΔEST value for efficient RISC.

UR - http://www.scopus.com/inward/record.url?scp=84938344967&partnerID=8YFLogxK

U2 - 10.1039/c5cc04126k

DO - 10.1039/c5cc04126k

M3 - 文章

AN - SCOPUS:84938344967

SN - 1359-7345

VL - 51

SP - 13024

EP - 13027

JO - Chemical Communications

JF - Chemical Communications

IS - 65

ER -

The inductive-effect of electron withdrawing trifluoromethyl for thermally activated delayed fluorescence: Tunable emission from tetra- to penta-carbazole in solution processed blue OLEDs

Abstract

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