长链咪唑型离子液体胶束聚集数的测定  

Determination of Micellar Aggregation of Long-chain Imidazolium Ionic Liquids

作　　者：王秀红[1] 张颖[1] 乔营[1] 李娟[1] 魏西莲[1] 

机构地区：[1]聊城大学化学化工学院,山东聊城252059

出　　处：《聊城大学学报（自然科学版）》2011年第2期46-49,共4页Journal of Liaocheng University:Natural Science Edition

基　　金：国家自然科学基金项目(21073081);聊城大学实验技术研究课题和实验教学研究课题(JX201004)

摘　　要：以芘(Py)为荧光探针,二甲苯酮(DPK)为猝灭剂,芘的饱和水溶液为溶剂配制长链咪唑离子液体溶液,用稳态荧光探针法测定了该系列长链离子液体胶束聚集数(Nagg).结果表明,胶束聚集数随离子液体浓度的升高而升高,随温度升高而降低.根据胶束聚集数与浓度的实验曲线得到临界胶束聚集数N0.Aggregation numbers of micelle （Nagg） of long-chain ionic liquids were determined by steady-state fluorescence method in which pyrene was used as fluorescence probe and benzophenone as quencher. The solution of long-chain ionic liquids was prepared with a saturated aqueous solution of pyrene. And the results indicated that Nagg increases linearly with the increase of concentration and decreases lightly with the increment of the increment of temperature. Moreover, the critical micellar aggregation number was obtained from Nagg-C experimental curves.

关 键 词：离子液体 稳态荧光光度法 胶束聚集数 

分 类 号：O64[理学—物理化学]