详细信息
PBO聚合物紫外吸收光谱中环境因素影响的理论研究
Theoretical Study of the Environment Effects on the Absorption Spectra of PBO Polymer
文献类型:期刊文献
中文题名:PBO聚合物紫外吸收光谱中环境因素影响的理论研究
英文题名:Theoretical Study of the Environment Effects on the Absorption Spectra of PBO Polymer
作者:冯东东[1];庄启昕[1];吴平平[1];韩哲文[1]
机构:[1]华东理工大学材料科学与工程学院超细材料制备与应用教育部重点实验室,上海200237
年份:2005
卷号:21
期号:1
起止页码:16
中文期刊名:物理化学学报
外文期刊名:Acta Physico-Chimica Sinica
收录:CSTPCD;;Scopus;北大核心:【北大核心2004】;CSCD:【CSCD2011_2012】;PubMed;
基金:国家高技术研究发展规划(863项目)(2002AA305109)上海市重点学科建设项目资助~~
语种:中文
中文关键词:PBO;量子化学计算;紫外吸收光谱;质子化效应
外文关键词:PBO; quantum chemistry calculation; UV spectra; protonation effect
摘要:芳杂环液晶高分子聚对亚苯基苯并二(口恶)唑(PBO,poly(p-phenylene-2,6-benzobisoxazole))的共轭平面结构赋予其光电性能而备受关注,实验结果表明其光电性能受其所处环境状态影响.通过量子化学计算研究发现,PBO 无论固态还是溶液状态的最大紫外吸收均较其本征值有所红移.对 PBO 二聚体模型以及其在强质子酸中所具有的质子化形态模型的紫外吸收光谱计算模拟的结果表明,PBO 聚集态时的分子间相互作用,以及溶液中质子化效应均导致红移,质子化模型所得紫外吸收光谱能很好地阐释溶液中具有精细结构实测的紫外吸收光谱。
The absorption optical spectra of poly (p-phenylene-2, 6-benzo bisoxazole) (PBO) in MSA (methanesulfonic acid) solution was similar with that in film. The UV spectra of the polymers were red-shifted from the theoretical UV spectra calculated with AM/ZINDO-CI. The results of quantum calculation on the model of protonated PBO and the aggregation PBO indicated that the red-shift were attributed to the effects of protonation or intermolecular interactions. The absorption spectrum of protonated PBO calculated with AMI/ZINDO accorded with the experimental optical absorption of PBO in MSA solution.
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