磁性聚合物刷的制备、功能化及其应用

Preparation,Functionalization and Application of Magnetic Polymer Brushes

磁性聚合物刷兼具磁性内核和聚合物刷外壳,是由一端连接在磁性内核表面的聚合物链组成的新型材料。磁性纳米粒子(MNP)赋予聚合物刷制备过程的便利和应用过程的功能性。近10年来,随着磁性微球制备技术和微球表面修饰方法的持续发展,针对磁性聚合物刷的结构设计、功能化以及应用等方面都进行了一系列的研究。磁性聚合物刷在分离纯化、生物成像等方面均具有广阔的应用前景。本文综述了磁性聚合物刷的最新研究进展,并展望了其今后的发展方向。

The magnetic polymer brushes contain a magnetic core and a polymer brush shell,which is a new type of core-shell structure composing of polymer chains densely grafted to the surface of the magnetic cores at one end.The magnetic core could be either based on single magnetic nanoparticle or composite materials,where the matrix to encapsulate the magnetic nanoparticles could be inorganic materials like silica or organic materials like polystyrene or poly(methyl methacrylate).The introduction of magnetic nanoparticles enables great convenience and functionality in the preparation process and practical application of polymer brushes.Functional magnetic polymer brushes could be recycled,separated,and purified by easy operation under external magnetic field.In the last decade,with the continuous development of preparation strategies of magnetic nanospheres and surface modification techniques of nanospheres,magnetic polymer brushes have been systematically studied on structure design,functionality and applications.Magnetic polymer brushes have broad application prospects in protein adsorption and purification,bioimaging,specific detection,and catalytic enhancement,etc.This paper reviews the latest research progress in magnetic polymer brushes,and the future development direction is also anticipated.