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Molecules

Title:		Pyrene-Based Blue AIEgen: Enhanced Hole Mobility and Good EL Performance in Solution-Processed OLEDs
Author(s):		Yang J; Qin J; Ren Z; Peng Q; Xie G; Li Z;
Address:		"Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials, Department of Chemistry, Wuhan University, Wuhan 430072, China. jieyangwhu@whu.edu.cn. Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials, Department of Chemistry, Wuhan University, Wuhan 430072, China. qinjianwen@whu.edu.cn. Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials, Department of Chemistry, Wuhan University, Wuhan 430072, China. renzichun225@163.com. Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. qpeng@iccas.ac.cn. Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials, Department of Chemistry, Wuhan University, Wuhan 430072, China. xgh-008@163.com. Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials, Department of Chemistry, Wuhan University, Wuhan 430072, China. lizhen@whu.edu.cn"
Journal Title:		Molecules
Year:		2017
Volume:		20171204
Issue:		12
Page Number:		-
DOI:		10.3390/molecules22122144
ISSN/ISBN:		1420-3049 (Electronic) 1420-3049 (Linking)
Abstract:		"Organic luminogens with strong solid-state emission have attracted much attention for their widely practical applications. However, the traditional organic luminogens with planar conformations often suffer from the notorious aggregation-caused quenching (ACQ) effect in solid state for the pi-pi stacking. Here, a highly efficient blue emitter TPE-4Py with an aggregation-induced emission (AIE) effect is achieved by combining twisted tetraphenylethene (TPE) core and planar pyrene peripheries. When the emitter was spin-coated in non-doped OLEDs with or without a hole-transporting layer, comparable EL performance was achieved, showing the bifunctional property as both an emitter and a hole-transporting layer. Furthermore, its EL efficiency was promoted in doped OLED, even at a high doping concentration (50%), because of its novel AIE effect, with a current efficiency up to 4.9 cd/A at 484 nm"
Keywords:		Organic Chemicals/*chemistry Pyrenes/*chemistry Volatile Organic Compounds/*chemistry aggregation-induced emission blue emitter hole-transporting ability solution-processed OLED;
Notes:		"MedlineYang, Jie Qin, Jianwen Ren, Zichun Peng, Qian Xie, Guohua Li, Zhen eng Switzerland 2017/12/07 Molecules. 2017 Dec 4; 22(12):2144. doi: 10.3390/molecules22122144"