文献类型：期刊文献

英文题名：Novel conjugated polymer poly(benzobisoxazole-2,6-diylvinylene): synthesis and evidence of aggregate formation in methanesulfonic acid

作者：Wang, Shanfeng[1,2]; Lei, Hui[1]; Guo, Peiying[1]; Wu, Pingping[1]; Han, Zhewen[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China

年份：2004

卷号：40

期号：6

起止页码：1163

外文期刊名：EUROPEAN POLYMER JOURNAL

收录：;EI(收录号：2004218176182);WOS:【SCI-EXPANDED(收录号:WOS:000221587600016)】；

语种：英文

外文关键词：polycondensation; photophysics; conjugated polymers; poly(benzobisoxazole-2,6-diylvinylene); poly(p-phenylene benzobisoxazole)

摘要：A new conjugated polymer poly(benzobisoxazole-2,6-diylvinylene) (PBOV) has been synthesized as an analogue of poly(p-phenylene benzobisoxazole) (PBO). The comparison between PBOV and PBO has been carried out by Fourier transform infrared spectroscopy, thermogravimetric analysis, UV, and photoluminescence (PL) spectroscopy. The UV absorption peaks, PL excitation and emission wavelengths of PBOV have a significant red-shift due to the better electronic delocalization. Similar to PBO, it can be observed in the PL spectra of PBOV at various concentrations in methanesulfonic acid (MSA) that the intensity of emission was depressed and the highly structured emission spectra gradually changed to featureless, red-shifted, and broad spectra with increasing concentration. The change in emission spectra can be attributed to the existence of the interchain aggregates, although PBOV does not show highly ordered structure as PBO does. (C) 2004 Elsevier Ltd. All rights reserved.