期刊
EUROPEAN POLYMER JOURNAL
卷 46, 期 5, 页码 997-1003出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2010.02.013
关键词
Triphenylamine-fluorene; Quinoline-fluorene; Blue light-emitting diodes; Hole-transporting materials
资金
- National Natural Science Foundation of China [20676034, 20876046]
- Ministry of Education of China [309013]
- Shanghai Municipal Educational Commission [08GG10]
A novel blue light-emitting polyfluorene-based copolymer PTHD containing electron-rich triphenylamine and electron-poor phenylquinoline side chains in the C-9 position of fluorene unit is described. By comparison of the solution and thin film photoluminescence (PL) spectra of PTHD, a considerable red-shift of Delta lambda =10-15 nm was observed in the thin film PL spectrum. The emission intensity of the shoulder peak appeared in dilute solution was also significantly enhanced in the thin film. In contrast to the reference polymer poly{[9,9-dihexylfluorene]-alt-[9,9-di(2,4-diphenylquinoline)fluorene]}, PTHD exhibits higher HOMO energy level, and higher maximum brightness with the PLED device configuration of ITO/PEDOT:PSS/polymer(70%) + PBD30%/TPBI/LiF/Al. (C) 2010 Elsevier Ltd. All rights reserved.
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