Synthesis and fluorescence in solution of polybenzimidazolylphenylenephthalamides
Synthesis and fluorescence in solution of polybenzimidazolylphenylenephthalamides
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聚苯并咪唑基苯二甲酰胺的合成和溶液中的荧光
DOI：
10.1002/app.12224
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
T. Kojima
中科院分区：
文献类型：
--
作者：
T. Fujimura;M. Tsuchiya;T. Koizumi;K. Ishimaru;T. Kojima
合成了6种聚苯并咪唑基苯基对苯二甲酰胺（PBIPPA）、2种间位/对异构体和4种间位/对异构体，它们在聚合物链中与相邻苯并咪唑基之间具有不同的距离。它们可溶于N，N-二甲基乙酰胺。除了分离的苯并咪唑π π*跃迁的荧光外，荧光光谱中还出现了大态发色团复合物的荧光，这种荧光在较高浓度下观察到。研究了荧光强度的浓度依赖性，以了解发色团复合物是分子间的还是分子内的。结果表明，该发色团是分子内的，这一结论得到了粘度测定结果的支持。©2003 Wiley期刊公司生物质化学工程学报，2009,31 (2):444 - 444
Six polybenzimidazolylphenylenephthalamides (PBIPPA), two meta/para isomers, and four meta/para isomers that had different distances between a benzimidazolyl and the adjacent benzimidazolyl in a polymer chain were synthesized. They were soluble in N,N-dimethylacetamide. In addition to the fluorescence from the π π* transition of isolated phenylbenzimidazole, a fluorescence from a chromophore complex in the grand state appeared in the fluorescence spectra, which was observed at higher concentrations. The concentration dependence of the intensity of the fluorescence was investigated in order to learn whether the chromophore complex was intermolecular or intramolecular. It was concluded that the chromophore complex is intramolecular, a conclusion supported by the viscometric results. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 1412–1416, 2003