Synthesis and Characterization of New Dibenzothiophene-based Host Materials for Blue Phosphorescent Organic Light-Emitting Diodes

Hyung Jong Kim; Ik Rang Choe; Tae Ryang Hong; Ju Sik Kang; Hyun Ah Um; Min Ju Cho; Dong Hoon Choi

doi:10.1080/15421406.2015.1095835

Synthesis and Characterization of New Dibenzothiophene-based Host Materials for Blue Phosphorescent Organic Light-Emitting Diodes

Hyung Jong Kim, Ik Rang Choe, Tae Ryang Hong, Ju Sik Kang, Hyun Ah Um, Min Ju Cho, Dong Hoon Choi

Department of Chemistry

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

1 Citation (Scopus)

Abstract

A series of bipolar host materials containing dibenzo[b,d]thiophene (DBT) or dibenzo[b,d]thiophene 5,5-dioxide core were successfully synthesized, and their physical, photophysical, and electrochemical properties were investigated. The three host materials showed well-localized electron distribution at the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) states, as evidenced by theoretical calculations. Triplet energies of the new host materials are higher than 2.6 eV, and the blend film with bis[2-(4,6-difluorophenyl)pyridinato-C²,N](picolinato)iridium(III) (FIrpic) as a blue phosphorescent dopant showed highly efficient energy transfer between the host material and dopant.

Original language	English
Pages (from-to)	31-39
Number of pages	9
Journal	Molecular Crystals and Liquid Crystals
Volume	621
Issue number	1
DOIs	https://doi.org/10.1080/15421406.2015.1095835
Publication status	Published - 2015 Nov 2

Keywords

bipolar host material
energy transfer
phosphorescence
triplet energy

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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10.1080/15421406.2015.1095835

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Synthesis and Characterization of New Dibenzothiophene-based Host Materials for Blue Phosphorescent Organic Light-Emitting Diodes. / Kim, Hyung Jong; Choe, Ik Rang; Hong, Tae Ryang; Kang, Ju Sik; Um, Hyun Ah; Cho, Min Ju; Choi, Dong Hoon.

In: Molecular Crystals and Liquid Crystals, Vol. 621, No. 1, 02.11.2015, p. 31-39.

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

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abstract = "A series of bipolar host materials containing dibenzo[b,d]thiophene (DBT) or dibenzo[b,d]thiophene 5,5-dioxide core were successfully synthesized, and their physical, photophysical, and electrochemical properties were investigated. The three host materials showed well-localized electron distribution at the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) states, as evidenced by theoretical calculations. Triplet energies of the new host materials are higher than 2.6 eV, and the blend film with bis[2-(4,6-difluorophenyl)pyridinato-C2,N](picolinato)iridium(III) (FIrpic) as a blue phosphorescent dopant showed highly efficient energy transfer between the host material and dopant.",

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AU - Cho, Min Ju

AU - Choi, Dong Hoon

N1 - Funding Information: This research was supported by National Research Foundation of Korea (NRF2012R1A2A1A01008797 & 20110026418) and by Key Research Institute Program through the NRF funded by the Ministry of Education, Science and Technology (NRF20100020209). Publisher Copyright: Copyright © 2015 Taylor & Francis Group, LLC.

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AB - A series of bipolar host materials containing dibenzo[b,d]thiophene (DBT) or dibenzo[b,d]thiophene 5,5-dioxide core were successfully synthesized, and their physical, photophysical, and electrochemical properties were investigated. The three host materials showed well-localized electron distribution at the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) states, as evidenced by theoretical calculations. Triplet energies of the new host materials are higher than 2.6 eV, and the blend film with bis[2-(4,6-difluorophenyl)pyridinato-C2,N](picolinato)iridium(III) (FIrpic) as a blue phosphorescent dopant showed highly efficient energy transfer between the host material and dopant.

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Synthesis and Characterization of New Dibenzothiophene-based Host Materials for Blue Phosphorescent Organic Light-Emitting Diodes

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Keywords

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