Blue thermally activated delayed fluorescence molecule having acridane and cyanobenzene units

Hiroki Noda; Ryota Kabe; Chihaya Adachi

doi:10.1246/cl.160814

Blue thermally activated delayed fluorescence molecule having acridane and cyanobenzene units

Hiroki Noda, Ryota Kabe, Chihaya Adachi

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14 Citations (Scopus)

Abstract

Highly efficient blue thermally activated delayed fluorescence (TADF) materials consisting of 9,9-diphenylacridan and benzonitrile units were developed. We found that placing 9,9-diphenylacridan in the ortho-position of benzonitrile enhanced the TADF process compared with results from meta- and para-substituted derivatives. We observed blue TADF emission with a high photoluminescence quantum yield (80%) and a high reverse intersystem crossing rate constant (1.2 × 10⁶ s^-1) for 2,6-bis(9,9-diphenylacridan-10(9H)-yl)benzonitrile (o-A2CN). An organic light-emitting diode fabricated using o-A2CN as an emitter showed good blue emission (CIE_x, CIE_y = 0.16, 0.16) with high external electroluminescence quantum efficiency (15.9%).

Original language	English
Pages (from-to)	1463-1466
Number of pages	4
Journal	Chemistry Letters
Volume	45
Issue number	12
DOIs	https://doi.org/10.1246/cl.160814
Publication status	Published - 2016

All Science Journal Classification (ASJC) codes

Chemistry(all)

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10.1246/cl.160814

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@article{0841d25fa2354139abd673f56d6d130e,

title = "Blue thermally activated delayed fluorescence molecule having acridane and cyanobenzene units",

abstract = "Highly efficient blue thermally activated delayed fluorescence (TADF) materials consisting of 9,9-diphenylacridan and benzonitrile units were developed. We found that placing 9,9-diphenylacridan in the ortho-position of benzonitrile enhanced the TADF process compared with results from meta- and para-substituted derivatives. We observed blue TADF emission with a high photoluminescence quantum yield (80%) and a high reverse intersystem crossing rate constant (1.2 × 106 s-1) for 2,6-bis(9,9-diphenylacridan-10(9H)-yl)benzonitrile (o-A2CN). An organic light-emitting diode fabricated using o-A2CN as an emitter showed good blue emission (CIEx, CIEy = 0.16, 0.16) with high external electroluminescence quantum efficiency (15.9%).",

author = "Hiroki Noda and Ryota Kabe and Chihaya Adachi",

note = "Funding Information: This work was supported by the Japan Science and Technology Agency (JST), ERATO, Adachi Molecular Exciton Engineering Project, the International Institute for Carbon Neutral Energy Research (WPI-I2CNER) sponsored by the Ministry of Education, Culture, Sports, Science and Technology (MEXT). Publisher Copyright: {\textcopyright} 2016 The Chemical Society of Japan.",

year = "2016",

doi = "10.1246/cl.160814",

language = "English",

volume = "45",

pages = "1463--1466",

journal = "Chemistry Letters",

issn = "0366-7022",

publisher = "The Chemical Society of Japan",

number = "12",

}

TY - JOUR

T1 - Blue thermally activated delayed fluorescence molecule having acridane and cyanobenzene units

AU - Noda, Hiroki

AU - Kabe, Ryota

AU - Adachi, Chihaya

N1 - Funding Information: This work was supported by the Japan Science and Technology Agency (JST), ERATO, Adachi Molecular Exciton Engineering Project, the International Institute for Carbon Neutral Energy Research (WPI-I2CNER) sponsored by the Ministry of Education, Culture, Sports, Science and Technology (MEXT). Publisher Copyright: © 2016 The Chemical Society of Japan.

PY - 2016

Y1 - 2016

N2 - Highly efficient blue thermally activated delayed fluorescence (TADF) materials consisting of 9,9-diphenylacridan and benzonitrile units were developed. We found that placing 9,9-diphenylacridan in the ortho-position of benzonitrile enhanced the TADF process compared with results from meta- and para-substituted derivatives. We observed blue TADF emission with a high photoluminescence quantum yield (80%) and a high reverse intersystem crossing rate constant (1.2 × 106 s-1) for 2,6-bis(9,9-diphenylacridan-10(9H)-yl)benzonitrile (o-A2CN). An organic light-emitting diode fabricated using o-A2CN as an emitter showed good blue emission (CIEx, CIEy = 0.16, 0.16) with high external electroluminescence quantum efficiency (15.9%).

AB - Highly efficient blue thermally activated delayed fluorescence (TADF) materials consisting of 9,9-diphenylacridan and benzonitrile units were developed. We found that placing 9,9-diphenylacridan in the ortho-position of benzonitrile enhanced the TADF process compared with results from meta- and para-substituted derivatives. We observed blue TADF emission with a high photoluminescence quantum yield (80%) and a high reverse intersystem crossing rate constant (1.2 × 106 s-1) for 2,6-bis(9,9-diphenylacridan-10(9H)-yl)benzonitrile (o-A2CN). An organic light-emitting diode fabricated using o-A2CN as an emitter showed good blue emission (CIEx, CIEy = 0.16, 0.16) with high external electroluminescence quantum efficiency (15.9%).

UR - http://www.scopus.com/inward/record.url?scp=84996844851&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84996844851&partnerID=8YFLogxK

U2 - 10.1246/cl.160814

DO - 10.1246/cl.160814

M3 - Article

AN - SCOPUS:84996844851

SN - 0366-7022

VL - 45

SP - 1463

EP - 1466

JO - Chemistry Letters

JF - Chemistry Letters

IS - 12

ER -

Blue thermally activated delayed fluorescence molecule having acridane and cyanobenzene units

Abstract

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