基于Belousov-Zhabotinsky自振荡反应的智能高分子

Smart Polymers Based on Belousov-Zhabotinsky Reaction

自振荡高分子是基于Belousov-Zhabotinsky自振荡反应(BZ反应)设计的一类新型智能高分子,其物理、化学性质可以在相对封闭且无外界刺激的BZ反应溶液中发生自主、可逆和循环的变化。本文从概念、设计原理、设计方法及潜在应用4个方面系统介绍了自振荡高分子,其中重点结合自振荡高分子的化学结构设计与物理结构设计介绍了这一领域的研究进展:详细归纳了目前已成功制备的具有不同化学结构或物理结构的自振荡高分子或凝胶,阐述了不同的设计方法的优点、存在的问题及可能的解决办法,最后介绍了自振荡高分子在自动运输智能表面、凝胶机器人、自主转动马达等方面的设计实例,并分析了该领域面临的问题及今后发展趋势。

Self-oscillating polymer is a new kind of smart polymers,Its chemical and physical properties exhibit autonomous,reversible and periodic changes in a relatively closed system without any external ＂on-off＂ stimuli.Belousov-Zhabotinsky reaction（BZ reaction）,which is similar to the tricarboxylic acid cycle in biological systems,is coupled with self-oscillating polymer prepared via copolymerization of N-isopropylacrylamide and double bond modified Ru（bpy）3（catalyst of BZ reaction）.In the presence of BZ reaction solution,the polymer undergoes spontaneous cyclic soluble-insoluble or swelling-deswelling（in the case of gel） changes induced by the redox oscillation of Ru（bpy）3.Based on the unique self-oscillating properties,self-oscillating polymers may have potential applications in the fields of automatic actuators,impulsators,micro-machines and controlled drug-release.Meanwhile,it may be a appropriate choose for simulation of autonomous phenomena and study of mechanisms of nonequilibrium phenomena in biosystems.In this paper,recent progress in self-oscillating polymer is systematically reviewed,including the conception,mechanisms,design methods and potential applications,focusing on the design of self-oscillating polymers and gels with different chemical or physical structures.Self-oscillating polymers with basic structure of poly（Ru（bpy）3-co-NIPAAm） and others containing different modifying groups,such as AMPS,MAPTAC,VP,NAS,and AA are summarized.Self-oscillating gels with phase-separation structure and microgel with ordered structure are also introduced.Performances of self-oscillating polymers and gels with different chemical or physical structures are discussed and listed.Finally,preliminary work on design of self-driven autonomous transportation surface,self-walking motion and autonomous rotational motion actuator based on self-oscillating gels are introduced.The problems of self-oscillating polymer researches and the trend in the future are analyzed.