Quinolyl functionalized spiro[fluorene-9,9'-xanthene] host materials with bipolar characteristics for green and red phosphorescent organic light-emitting diodes
Abstract
Spiro[fluorene-9,9'-xanthene] (SFX) bipolar hosts bearing one, two and three quinolyl substituents, namely SFX-bPy, SFX-DbPy and SFX-TbPy, were designed and synthesized for phosphorescent organic light emitting diodes (PhOLEDs). The successive substitution of quinoline at 2', 2 and 7' positions of SFX results in reduced LUMO energy levels while leaving the HOMO energy levels nearly intact. The impact of quinoline substitution in these SFX-based hosts on PhOLED performance was investigated in detail through green and red model devices. For the green emitting devices, the device based on SFX-bPy host showed better performance (23.6 cd A-1, 23.4 lm W-1, 6.3%) due to high triplet energy level (T1) and balanced carriers-transporting ability. In contrast, for the red PhOLED devices, the device hosted by SFX-DbPy displayed higher performance (15.8 cd A-1, 16.0 lm W-1, 9.1%), attributable to the well matched T1 and separated frontier molecular orbitals. This work thus sheds light on the rational design of SFX-based bipolar hosts for more efficient PhOLEDs.
- Authors:
-
- Shenyang Univ. of Chemical Technology, Shenyang (China); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Shenyang Univ. of Chemical Technology, Shenyang (China)
- Xinyang Normal Univ., Xinyang (China)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Northeast Forestry Univ., Harbin (China)
- Jilin Univ., Changchun (China)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1530248
- Alternate Identifier(s):
- OSTI ID: 1351661
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Organic Electronics
- Additional Journal Information:
- Journal Volume: 36; Journal Issue: C; Journal ID: ISSN 1566-1199
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Ren, Bao-Yi, Zhong, Dao-Kun, Sun, Ya-Guang, Zhao, Xiang-Hua, Zhang, Qi-Jian, Liu, Yi, Jurow, Matthew, Sun, Ming-Li, Zhang, Zhen-Song, and Zhao, Yi. Quinolyl functionalized spiro[fluorene-9,9'-xanthene] host materials with bipolar characteristics for green and red phosphorescent organic light-emitting diodes. United States: N. p., 2016.
Web. doi:10.1016/j.orgel.2016.06.006.
Ren, Bao-Yi, Zhong, Dao-Kun, Sun, Ya-Guang, Zhao, Xiang-Hua, Zhang, Qi-Jian, Liu, Yi, Jurow, Matthew, Sun, Ming-Li, Zhang, Zhen-Song, & Zhao, Yi. Quinolyl functionalized spiro[fluorene-9,9'-xanthene] host materials with bipolar characteristics for green and red phosphorescent organic light-emitting diodes. United States. https://doi.org/10.1016/j.orgel.2016.06.006
Ren, Bao-Yi, Zhong, Dao-Kun, Sun, Ya-Guang, Zhao, Xiang-Hua, Zhang, Qi-Jian, Liu, Yi, Jurow, Matthew, Sun, Ming-Li, Zhang, Zhen-Song, and Zhao, Yi. Thu .
"Quinolyl functionalized spiro[fluorene-9,9'-xanthene] host materials with bipolar characteristics for green and red phosphorescent organic light-emitting diodes". United States. https://doi.org/10.1016/j.orgel.2016.06.006. https://www.osti.gov/servlets/purl/1530248.
@article{osti_1530248,
title = {Quinolyl functionalized spiro[fluorene-9,9'-xanthene] host materials with bipolar characteristics for green and red phosphorescent organic light-emitting diodes},
author = {Ren, Bao-Yi and Zhong, Dao-Kun and Sun, Ya-Guang and Zhao, Xiang-Hua and Zhang, Qi-Jian and Liu, Yi and Jurow, Matthew and Sun, Ming-Li and Zhang, Zhen-Song and Zhao, Yi},
abstractNote = {Spiro[fluorene-9,9'-xanthene] (SFX) bipolar hosts bearing one, two and three quinolyl substituents, namely SFX-bPy, SFX-DbPy and SFX-TbPy, were designed and synthesized for phosphorescent organic light emitting diodes (PhOLEDs). The successive substitution of quinoline at 2', 2 and 7' positions of SFX results in reduced LUMO energy levels while leaving the HOMO energy levels nearly intact. The impact of quinoline substitution in these SFX-based hosts on PhOLED performance was investigated in detail through green and red model devices. For the green emitting devices, the device based on SFX-bPy host showed better performance (23.6 cd A-1, 23.4 lm W-1, 6.3%) due to high triplet energy level (T1) and balanced carriers-transporting ability. In contrast, for the red PhOLED devices, the device hosted by SFX-DbPy displayed higher performance (15.8 cd A-1, 16.0 lm W-1, 9.1%), attributable to the well matched T1 and separated frontier molecular orbitals. This work thus sheds light on the rational design of SFX-based bipolar hosts for more efficient PhOLEDs.},
doi = {10.1016/j.orgel.2016.06.006},
journal = {Organic Electronics},
number = C,
volume = 36,
place = {United States},
year = {Thu Jun 09 00:00:00 EDT 2016},
month = {Thu Jun 09 00:00:00 EDT 2016}
}
Web of Science
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