化学
羧甲基纤维素
耗散系统
离子
瞬态(计算机编程)
纤维素
光化学
化学工程
有机化学
热力学
钠
物理
计算机科学
工程类
操作系统
作者
Roberto Baretta,Gilad Davidson‐Rozenfeld,Vitaly Gutkin,Marco Frasconi,Itamar Willner
摘要
A Fe3+-ion cross-linked carboxymethyl cellulose, Fe3+-CMC, redox-active gel exhibiting dissipative, transient stiffness properties is introduced. Chemical or photosensitized reduction of the higher-stiffness Fe3+-CMC to the lower-stiffness Fe2+-CMC gel, accompanied by the aerobic reoxidation of the Fe2+-CMC matrix, leads to the dissipative, transient stiffness, functional matrix. The light-induced, temporal, transient release of a load (Texas red dextran) and the light-triggered, transient mechanical bending of a poly-N-isopropylacrylamide (p-NIPAM)/Fe3+-CMC bilayer construct are introduced, thus demonstrating the potential use of the dissipative Fe3+-CMC gel for controlled drug release or soft robotic applications.
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