【强聚电解质在有机溶剂中聚集态转变的萤光光谱】任碧野.pdf

Ph.D.Dissertationof South China University of Technology Fluorescence Spectra of Aggregation State Transition of Strong Polyelectrolytes in Organic Solvents RENBi-Ye Supervisor:Prof.

摘要摘要本研究的主要自的是考察聚电解质电离基团的电离状态与周围微环境的极性变化的关系,揭示聚电解质体系静电排斥与偶极吸引转变规律.本文的主要内容和结果包括以下几方面:合成了一种对溶剂极性高度敏感的荧光单体:N-(丙烯酰胺乙基)-5-(N,N-二甲胺基)-1-萘磺酰胺(DANSAEP)测定了DANSAEP在不同极性溶剂于分子内扭转电荷转移(TICT)态发射.TICT发射的波长对溶剂极性十分敏感,可作为表征溶剂极性的标尺.应用线性溶剂化自由能关系(LSER)对进行关联．提出了相应的动力学示意图对dansyl的荧光行为进行了合理的解释.

ABSTRACT ABSTRACT The purpose of the presentwork is to investigate the change in the stateofdissociationofionoziablegroupsinpolyelectrolytewiththe medium polarity by fluorescence spectra.The main work and results are asfollows: Fluorescence monomer sensitive to solvent polarity,N-(acrylamide)-5-