作者：Xiaohui Xu, Xiaoyun Liu, Qixin Zhuang, Zhewen Han,
关键字：polybenzoxazole，thiophene，photoluminescence，protonation effect
论文来源：期刊
具体来源：Journal of Macromolecular Science, Part A Pure and Applied Chemistry，2010, 47: 977-982
发表时间：2010年

In order to investigate the protonation effect of polybenzoxazole, a kind of soluble thiophene-based polybenzoxazole (PBOP-Th) is synthesized and characterized by the FTIR, 1H NMR, elemental analysis, thermogravimetric analysis (TGA), UV-Vis and photoluminescence (PL) spectra. Another polymer aminophenols -based polybenzoxazole (PBOP-Ph) was also synthesized as reference polymer. Unlike usual polybenzoxazoles such as poly(p-phenylenebenzobisoxazole) (PBO) and poly(2,5-thienylbenzobisoxazole) (PBOT), PBOP-Th and PBO-Ph has greatly enhanced solubility due to the introduction of isopropylidene and/or thiophene cycle. The effect of protonation on photophysical properties of polybenzoxazoles is studied by experiment method for the first time. The 30 nm red shift on the UV-Vis and PL spectra of polymer is observed in methanesulfonic acid (MSA) solution comparing with that of polymer in neutral N, N-dimethyl fomamide (DMF) solution, which is believed due to the protonation effect.