Conformation and Counterion Distribution of Polyelectrolyte in Solution as Viewed from Dielectric Approach  

作　　者：Kong-Shuang Zhao 

机构地区：[1]College of Chemistry,Beijing Normal University,Beijing 100875,China

出　　处：《Chinese Journal of Polymer Science》2024年第9期1278-1301,I0005,共25页高分子科学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.21673002,21473012 and 21173025).

摘　　要：Polyelectrolyte solutions are more variable than uncharged macromolecule due to electrical interaction between charged molecules and surrounding counterions.Therefore,the subject of polyelectrolyte solutions has attracted a wide range of interests in both basic and applied research,and has also been extensively explored.However,the understanding of the molecular dynamics and conformation of polyelectrolytes in solution remains to be deepened,and universal consensus on some key issues have not been reached.Many methods have contributed to solving the above problems in different ways,including dielectric relaxation spectroscopy(DRS).In this perspective,we briefly reviewed the history of dielectric spectroscopic research on polyelectrolyte solution,with emphasis on summarizing our efforts.In particular,we expound the characteristics of DRS and its ability to obtain the internal information of the system of interest.Finally,we evaluate the advantages and limitations of the dielectric method and discussed future prospects of this field.

关 键 词：POLYELECTROLYTE Dielectric relaxation spectroscopy Chain conformation Thermosensitive microgel PNIPAM microgel Spherical polyelectrolyte brushes 

分 类 号：O646.1[理学—物理化学] O631[理学—化学]