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Appending triphenyltriazine to 1,10-phenanthroline: a robust electron-transport material for stable organic light-emitting diodes.
Jin, Guang; Liu, Jun-Zhe; Zou, Jian-Hua; Huang, Xiao-Lan; He, Meng-Jiao; Peng, Ling; Chen, Ling-Ling; Zhu, Xu-Hui; Peng, Junbiao; Cao, Yong.
Afiliação
  • Jin G; State Key Laboratory of Luminescent Materials and Devices, and Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology (SCUT), Guangzhou 510640, China.
  • Liu JZ; State Key Laboratory of Luminescent Materials and Devices, and Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology (SCUT), Guangzhou 510640, China.
  • Zou JH; State Key Laboratory of Luminescent Materials and Devices, and Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology (SCUT), Guangzhou 510640, China.
  • Huang XL; State Key Laboratory of Luminescent Materials and Devices, and Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology (SCUT), Guangzhou 510640, China.
  • He MJ; State Key Laboratory of Luminescent Materials and Devices, and Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology (SCUT), Guangzhou 510640, China.
  • Peng L; State Key Laboratory of Luminescent Materials and Devices, and Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology (SCUT), Guangzhou 510640, China.
  • Chen LL; State Key Laboratory of Luminescent Materials and Devices, and Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology (SCUT), Guangzhou 510640, China.
  • Zhu XH; State Key Laboratory of Luminescent Materials and Devices, and Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology (SCUT), Guangzhou 510640, China. Electronic address: xuhuizhu@scut.edu.cn.
  • Peng J; State Key Laboratory of Luminescent Materials and Devices, and Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology (SCUT), Guangzhou 510640, China.
  • Cao Y; State Key Laboratory of Luminescent Materials and Devices, and Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology (SCUT), Guangzhou 510640, China.
Sci Bull (Beijing) ; 63(7): 446-451, 2018 Apr 15.
Article em En | MEDLINE | ID: mdl-36658940
There has been an increasing demand for high-performance and cost-effective organic electron-transport materials for organic light-emitting diodes (OLEDs). In this contribution, we present a simple compound 3-(3-(4,6-diphenyl-1,3,5-triazin-2-yl)phenyl)-1,10-phenanthroline through the facile Pd-catalyzed coupling of a triphenyltriazine boronic ester with 3-bromo-1,10-phenanthroline. It shows a high Tg of 112 °C. The ultraviolet photoelectron spectroscopy measurements reveal a deep HOMO level of -6.5 eV. The LUMO level is derived as -3.0 eV, based on the optical bandgap. The low-temperature solid-state phosphorescent spectrum gives a triplet energy of ∼2.36 eV. n-Doping with 8-hydroxyquinolatolithium (Liq, 1:1) leads to considerably improved electron mobility of 5.2 × 10-6-5.8 × 10-5 cm2 V-1 s-1 at E = (2-5) × 105 V cm-1, in contrast with the triarylphosphine oxide-phenantroline molecular conjugate we reported previously. It has been shown that through optimizing the device structure and hence suppressing polaron-exciton annihilation, introducing this single Liq-doped electron-transport layer could offer high-efficiency and stable phosphorescent OLEDs.
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Texto completo: 1 Bases de dados: MEDLINE Idioma: En Revista: Sci Bull (Beijing) Ano de publicação: 2018 Tipo de documento: Article País de afiliação: China

Texto completo: 1 Bases de dados: MEDLINE Idioma: En Revista: Sci Bull (Beijing) Ano de publicação: 2018 Tipo de documento: Article País de afiliação: China