Spiropyran based hydrogels actuators-Walking in the light
Spiropyran based hydrogels actuators-Walking in the light
复制标题
DOI：
10.1016/j.snb.2017.05.005
复制
发表时间：
2017-10-01
影响因子：
8.4
通讯作者：
Diamond, Dermot
中科院分区：
文献类型：
--
作者：
Francis, Wayne;Dunne, Aishling;Diamond, Dermot
本文报道了基于N-异丙基丙烯酰胺-co-丙烯酸化螺吡喃-co-丙烯酸p（NIPAAm-co-SP-co-AA）的双足水凝胶步行者的合成。由于聚合物结构中存在光致变色螺吡喃分子，这些水凝胶在暴露于不同的光条件时在水性环境中可逆地收缩和溶胀。当放置在棘齿表面上时，双足凝胶的致动通过在给定方向上采取一系列步骤来产生行走运动，如由棘齿支架的优化设计所确定的。我们预计，这种仿生水凝胶步行者可以形成光驱动软机器人的基础，这些机器人能够实现更高级的功能，例如自主迁移到特定位置，并伴随着分子货物的触发释放。(C)2017爱思唯尔B. V.保留所有权利。
Herein we report on the synthesis of a bipedal hydrogel walker, based on N-isopropylacrylamide-co-acrylated spiropyran-co-acrylic acid p(NIPAAm-co-SP-co-AA). Due to the presence of the photochromic spiropyran molecule in the polymer structure, these hydrogels reversibly shrink and swell in aqueous environments when exposed to different light conditions. When placed onto a ratcheted surface, the actuation of the bipedal gel produces a walking motion by taking a series of steps in a given direction, as determined by the optimised design of the ratchet scaffold. We anticipate that such biomimetic hydrogel walkers could form the basis of light-actuated soft robots capable of more advanced functions, such as autonomous migration to specific locations accompanied by triggered release of molecular cargo. (C) 2017 Elsevier B.V. All rights reserved.