期刊
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
卷 48, 期 1, 页码 91-98出版社
JOHN WILEY & SONS INC
DOI: 10.1002/pola.23764
关键词
carbazole; copolymerization; cyano-substituted arylenevinylene; fluorescence; fluorescence resonance electron transfer; light-emitting diodes
Two arylenevinylene compounds bearing the cyano group at alpha-position (6) and beta-position (9) from the dialkoxylphenylene unit were synthesized, in which the molecular termini were functionalized with 3-bromocarbazole. The Suzuki coupling copolymerization of these compounds with 1,4-bis[(3'-bromocarbazole-9'-yl)methylene]-2,5-didecyloxybenzene and 9,9-dihexylfluorene-2,7-bis(boronic acid) was carried out to obtain copolymers (cp67 and cp97) containing the cyano-substituted arylenevinylene fluorophore of 7 mol %. Model compounds (6' and 9') corresponding to the arylenevinylene fluorophore were also prepared. The UV spectra of copolymers resembled that of homopolymer hp with no arylenevinylene segment in both CHCl(3) solution and thin film. The emission maxima of copolymers in CHCl(3) (394 nm) agreed with that of homopolymer indicating that the emission bands originated from the carbazole-fluorene-carbazole segment. The emission maximum wavelength of copolymer cp67 in thin film (477 nm) indicated fluorescence from the cyano-substituted arylenevinylene fluorophore because of the occurrence of fluorescence resonance electron transfer. In contrast, copolymer cp97 showed fluorescence at 528 nm to suggest the formation of a new emissive species such as a charge-transfer complex (exciplex). (C) 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 91-98, 2010
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据