摘要
水溶液中的聚电解质可引起离子菁生成聚集体,考虑到离子菁J-聚集体与聚电解质的一些相似性,我们研究了其对相反电荷离子菁J-聚集体生成的引发作用。本文分析了离子菁J-聚集体引起相反电荷离子菁生成J-聚集体的影响因素,讨论了引发聚集与被引发聚集的离子菁的电性、它们本身的结构之间的相互关系及外加无机盐对引发聚集效应产生的影响。
The induced formation of J-aggregates of ionic cyanines by the J-aggregates of ionic cyanines with opposite charges was studied by vis-absorption spectra in aqueous solutions at room temperature. It was found that the induction effect was more pronounced by dye aggregates than by polyelectrolytes. It was also found that the addition of a polyelectrolyte or an inorganic salt together with the aggregation inducing J-aggregates would reduce the induction effect of the latter owing to the partial depression of its charge. Efficiently inducing action was favored when the two cyanines have closely related structure to facilitate the formation of compatible segregated J-stacks of the two ionic dyes. A model with the structural compatible totality of segregated J-stacks for the two oppositely charged ionic cyanine dyes was proposed from the results.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1991年第6期833-835,共3页
Chemical Journal of Chinese Universities
