Non-Doped Deep-Blue OLEDs Based on Carbazole-π-Imidazole Derivatives

In this work, we designed and synthesized four bipolar blue-emitting materials with carbazole, imidazole, and biphenyl as donor, acceptor, and p bridge, respectively. The twisted phenylimidazole acceptor leads to a wider band-gap and hence deeper blue emission than the conjugated phenanthrimidazole...

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Detalles Bibliográficos
Autores principales: Yu, Pengfei, Xiao, Yin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8125583/
https://www.ncbi.nlm.nih.gov/pubmed/33946557
http://dx.doi.org/10.3390/ma14092349
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author Yu, Pengfei
Xiao, Yin
author_facet Yu, Pengfei
Xiao, Yin
author_sort Yu, Pengfei
collection PubMed
description In this work, we designed and synthesized four bipolar blue-emitting materials with carbazole, imidazole, and biphenyl as donor, acceptor, and p bridge, respectively. The twisted phenylimidazole acceptor leads to a wider band-gap and hence deeper blue emission than the conjugated phenanthrimidazole acceptor. For the substituents on the carbazole donor, the t-butyl group could prevent the intramolecular charge transfer (ICT) process more effectively than the methoxy group. A non-doped deep-blue organic light-emitting diodes (OLED) is obtained with CIE coordinates of (0.159, 0.080), a maximum luminance of 11,364 cd/m(2), and a maximum EQE of 4.43%.
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spelling pubmed-81255832021-05-17 Non-Doped Deep-Blue OLEDs Based on Carbazole-π-Imidazole Derivatives Yu, Pengfei Xiao, Yin Materials (Basel) Communication In this work, we designed and synthesized four bipolar blue-emitting materials with carbazole, imidazole, and biphenyl as donor, acceptor, and p bridge, respectively. The twisted phenylimidazole acceptor leads to a wider band-gap and hence deeper blue emission than the conjugated phenanthrimidazole acceptor. For the substituents on the carbazole donor, the t-butyl group could prevent the intramolecular charge transfer (ICT) process more effectively than the methoxy group. A non-doped deep-blue organic light-emitting diodes (OLED) is obtained with CIE coordinates of (0.159, 0.080), a maximum luminance of 11,364 cd/m(2), and a maximum EQE of 4.43%. MDPI 2021-04-30 /pmc/articles/PMC8125583/ /pubmed/33946557 http://dx.doi.org/10.3390/ma14092349 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Communication
Yu, Pengfei
Xiao, Yin
Non-Doped Deep-Blue OLEDs Based on Carbazole-π-Imidazole Derivatives
title Non-Doped Deep-Blue OLEDs Based on Carbazole-π-Imidazole Derivatives
title_full Non-Doped Deep-Blue OLEDs Based on Carbazole-π-Imidazole Derivatives
title_fullStr Non-Doped Deep-Blue OLEDs Based on Carbazole-π-Imidazole Derivatives
title_full_unstemmed Non-Doped Deep-Blue OLEDs Based on Carbazole-π-Imidazole Derivatives
title_short Non-Doped Deep-Blue OLEDs Based on Carbazole-π-Imidazole Derivatives
title_sort non-doped deep-blue oleds based on carbazole-π-imidazole derivatives
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8125583/
https://www.ncbi.nlm.nih.gov/pubmed/33946557
http://dx.doi.org/10.3390/ma14092349
work_keys_str_mv AT yupengfei nondopeddeepblueoledsbasedoncarbazolepimidazolederivatives
AT xiaoyin nondopeddeepblueoledsbasedoncarbazolepimidazolederivatives

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