Highly effective organic light-emitting diodes containing thermally activated delayed fluorescence emitters with horizontal molecular orientation

Chan Hee Lee; Shin Hyung Choi; Sung Joon Oh; Jun Hyeon Lee; Jae Won Shim; Chihaya Adachi; Sae Youn Lee

doi:10.1039/d0ra07865d

Highly effective organic light-emitting diodes containing thermally activated delayed fluorescence emitters with horizontal molecular orientation

Chan Hee Lee, Shin Hyung Choi, Sung Joon Oh, Jun Hyeon Lee, Jae Won Shim, Chihaya Adachi, Sae Youn Lee

Applied Chemistry

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

6 Citations (Scopus)

Abstract

In this study, we report new thermally activated delayed fluorescence (TADF) emitters, AcPYM (10,10′-(pyrimidine-2,5-diylbis(4,1-phenylene))bis(9,9-dimethyl-9,10-dihydroacridine)) and PxPYM (10,10′-(pyrimidine-2,5-diylbis(4,1-phenylene))bis(10H-phenoxazine)), by employing donor units at the 2,5-positions of the pyrimidine acceptor unit. The donor-Acceptor-donor (D-A-D) units combined in the linear molecular structure of AcPYM or PxPYM enhanced the horizontally oriented alignment, and the horizontal transition dipole moments were realized by up to 87% in the host matrix. Organic light-emitting diodes (OLEDs) containing AcPYM and PxPYM emitters realized external quantum efficiencies (ηext) of 16.8% for blue and green emissions.

Original language	English
Pages (from-to)	42897-42902
Number of pages	6
Journal	RSC Advances
Volume	10
Issue number	70
DOIs	https://doi.org/10.1039/d0ra07865d
Publication status	Published - Nov 26 2020

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)

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@article{50b64314e9534a44b0d9a27d4df2e82e,

title = "Highly effective organic light-emitting diodes containing thermally activated delayed fluorescence emitters with horizontal molecular orientation",

abstract = "In this study, we report new thermally activated delayed fluorescence (TADF) emitters, AcPYM (10,10′-(pyrimidine-2,5-diylbis(4,1-phenylene))bis(9,9-dimethyl-9,10-dihydroacridine)) and PxPYM (10,10′-(pyrimidine-2,5-diylbis(4,1-phenylene))bis(10H-phenoxazine)), by employing donor units at the 2,5-positions of the pyrimidine acceptor unit. The donor-Acceptor-donor (D-A-D) units combined in the linear molecular structure of AcPYM or PxPYM enhanced the horizontally oriented alignment, and the horizontal transition dipole moments were realized by up to 87% in the host matrix. Organic light-emitting diodes (OLEDs) containing AcPYM and PxPYM emitters realized external quantum efficiencies (ηext) of 16.8% for blue and green emissions.",

author = "Lee, {Chan Hee} and Choi, {Shin Hyung} and Oh, {Sung Joon} and Lee, {Jun Hyeon} and Shim, {Jae Won} and Chihaya Adachi and Lee, {Sae Youn}",

note = "Funding Information: This research was supported by the Dongguk University Research Fund of 2017 for S. Y. Lee. C. Adachi acknowledges support from the Japan Science and Technology Agency (JST) and ERATO, the Adachi Molecular Exciton Engineering Project, under JST ERATO (grant number: JPMJER1305), Japan, and the International Institute for Carbon Neutral Energy Research (WPI-I2CNER) funded by the Ministry of Education, Culture, Sports, Science & Technology (MEXT). Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",

year = "2020",

month = nov,

day = "26",

doi = "10.1039/d0ra07865d",

language = "English",

volume = "10",

pages = "42897--42902",

journal = "RSC Advances",

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T1 - Highly effective organic light-emitting diodes containing thermally activated delayed fluorescence emitters with horizontal molecular orientation

AU - Lee, Chan Hee

AU - Choi, Shin Hyung

AU - Oh, Sung Joon

AU - Lee, Jun Hyeon

AU - Shim, Jae Won

AU - Adachi, Chihaya

AU - Lee, Sae Youn

N1 - Funding Information: This research was supported by the Dongguk University Research Fund of 2017 for S. Y. Lee. C. Adachi acknowledges support from the Japan Science and Technology Agency (JST) and ERATO, the Adachi Molecular Exciton Engineering Project, under JST ERATO (grant number: JPMJER1305), Japan, and the International Institute for Carbon Neutral Energy Research (WPI-I2CNER) funded by the Ministry of Education, Culture, Sports, Science & Technology (MEXT). Publisher Copyright: © The Royal Society of Chemistry.

PY - 2020/11/26

Y1 - 2020/11/26

N2 - In this study, we report new thermally activated delayed fluorescence (TADF) emitters, AcPYM (10,10′-(pyrimidine-2,5-diylbis(4,1-phenylene))bis(9,9-dimethyl-9,10-dihydroacridine)) and PxPYM (10,10′-(pyrimidine-2,5-diylbis(4,1-phenylene))bis(10H-phenoxazine)), by employing donor units at the 2,5-positions of the pyrimidine acceptor unit. The donor-Acceptor-donor (D-A-D) units combined in the linear molecular structure of AcPYM or PxPYM enhanced the horizontally oriented alignment, and the horizontal transition dipole moments were realized by up to 87% in the host matrix. Organic light-emitting diodes (OLEDs) containing AcPYM and PxPYM emitters realized external quantum efficiencies (ηext) of 16.8% for blue and green emissions.

AB - In this study, we report new thermally activated delayed fluorescence (TADF) emitters, AcPYM (10,10′-(pyrimidine-2,5-diylbis(4,1-phenylene))bis(9,9-dimethyl-9,10-dihydroacridine)) and PxPYM (10,10′-(pyrimidine-2,5-diylbis(4,1-phenylene))bis(10H-phenoxazine)), by employing donor units at the 2,5-positions of the pyrimidine acceptor unit. The donor-Acceptor-donor (D-A-D) units combined in the linear molecular structure of AcPYM or PxPYM enhanced the horizontally oriented alignment, and the horizontal transition dipole moments were realized by up to 87% in the host matrix. Organic light-emitting diodes (OLEDs) containing AcPYM and PxPYM emitters realized external quantum efficiencies (ηext) of 16.8% for blue and green emissions.

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Highly effective organic light-emitting diodes containing thermally activated delayed fluorescence emitters with horizontal molecular orientation

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