表面活性剂聚集体界面水合性质的研究进展  

Research progress in hydration properties of surfactant aggregates

作　　者：韩玉淳[1] 申玉坦 王毅琳[1,2] Yuchun Han;Yutan Shen;Yilin Wang(Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院化学研究所胶体界面与化学热力学实验室,北京100190 [2]中国科学院大学,北京100049

出　　处：《中国科学：化学》2023年第7期1205-1214,共10页SCIENTIA SINICA Chimica

基　　金：国家科技部重点研发计划(编号:2021YFA0716700);国家自然科学基金(编号:21988102,22272184,22072161)资助项目。

摘　　要：表面活性剂在水中可以形成多种有序组装体,在非水溶剂中也需要借助水的参与形成聚集体.水分子在聚集体界面处的结合状态与聚集体的结构和功能密切相关,聚集体界面水合性质的表征对于理解聚集体的组装机理和发展聚集体的各种功能有重要意义.有效的表征技术是获得聚集体界面水稳态结构和动态性质的前提.本文简述了近30年用于表面活性剂聚集体界面水合状态表征的研究手段和所获得的信息,包括针对稳态性质表征的化学捕集法、拉曼光谱结合多元曲线分辨算法和脉冲梯度自旋回波核磁共振,针对动态性质表征的介电弛豫光谱、超快红外光谱和时间分辨荧光光谱等技术,最后对该领域的未来研究方向进行了展望.Surfactants tend to assemble into a variety of ordered structures in water,and they also can form aggregates in non-aqueous solvents but generally requiring water involvement.Interfacial hydration state directly affects structure and function of aggregates.Knowledge on hydration properties of aggregates is important for understanding assembly mechanism and developing desired functions.Characterization method is crucial for obtaining structure and dynamic properties of interfacial water in aggregates.This review focuses on research progress in surfactant aggregate hydration using different characterization methods in the past three decades.Chemical trapping method,Raman spectroscopy with multivariate curve resolution and pulsed gradient spin-echo NMR for static state property of interfacial water are described,while dielectric relaxation spectroscopy,ultrafast 2D infrared spectroscopy and time-resolved fluorescence spectroscopy aiming for dynamic behavior of interfacial water are introduced.Finally,the future research in this field is anticipated.

关 键 词：表面活性剂 聚集体 界面水合 疏水效应 动态性质 

分 类 号：O647.1[理学—物理化学]