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题名: Highly stable blue light-emitting materials with a three-dimensional architecture: improvement of charge injection and electroluminescence performance
作者: Lei, Ting3, 4;  Luo, Jia3, 4;  Wang, Lei1, 2;  Ma, Yuguo3, 4;  Wang, Jian1, 2;  Cao, Yong1, 2;  Pei, Jian3, 4
刊名: NEW JOURNAL OF CHEMISTRY
发表日期: 2010
DOI: 10.1039/b9nj00723g
卷: 34, 期:4, 页:699-707
收录类别: SCI ;  IC
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: Two classes of blue emitters bearing electron-rich or electron-deficient units were developed for organic light-emitting diodes. Such shape persistent three-dimensional (3D) structures provided six molecules emitting pure and stable blue light. The photophysical, electrochemical, and thermal properties as well as the thin film morphologies of these blue emitters were investigated in detail. These results indicated that the side groups did not change the photophysical properties, but significantly affected the electrochemical properties to improve the charge injection and the aggregation behaviours of the molecules. The electroluminescence performance was greatly improved without using 1,3,5-tris(N-phenylbenzimidazol-2-yl) benzene (TPBI) as an electron injection layer after the introduction of Taz and Oxd as the side groups. In comparison with sFOMe, 9,9'-spirobifluorene-containing compounds (sFTaz, and sFOxd) exhibited better electroluminescence due to the improvement of the electron injection ability after the introduction of electron-deficient groups. These investigations provide us with an important way to improve the OLED efficiency through the modi. cation of the chemical structure.
关键词[WOS]: ELECTRON-DEFICIENT MOIETIES ;  HIGH-EFFICIENCY ;  CONJUGATED POLYMERS ;  SPIRO COMPOUNDS ;  GREEN EMISSION ;  POLYFLUORENE ;  DIODES ;  DEVICES ;  DERIVATIVES ;  OXADIAZOLE
语种: 英语
WOS记录号: WOS:000276190800018
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141960
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.S China Univ Technol, Inst Polymer Optoelect Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China
2.Minist Educ, Key Lab Specially Funct Mat, Guangzhou 510640, Guangdong, Peoples R China
3.Peking Univ, Coll Chem, Key Lab Bioorgan Chem & Mol Engn, BNLMS, Beijing 100871, Peoples R China
4.Peking Univ, Coll Chem, Key Lab Polymer Chem, BNLMS, Beijing 100871, Peoples R China

Recommended Citation:
Lei, Ting,Luo, Jia,Wang, Lei,et al. Highly stable blue light-emitting materials with a three-dimensional architecture: improvement of charge injection and electroluminescence performance[J]. NEW JOURNAL OF CHEMISTRY,2010,34(4):699-707.
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