基于环境响应高分子刷的自驱动胶体马达运动的人为控制
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摘要
胶体马达是一种能够将环境中的化学能、光能、电能等转化为机械运动的人造微纳米装置。速度是评价人造微纳米马达运动行为的一项重要指标。有效控制胶体马达的运动速度以及启停状态对于马达在药物递送、纳米操控、生物检测等领域的应用具有重要意义。我们制备了高分子刷修饰的气泡驱动阴阳型胶体马达。该聚合物刷对于不同种类的阴离子具有良好的刺激响应性。通过调节溶液中阴离子的种类与浓度,实现了对胶体马达运动速度及启停状态的控制。
Colloid motors are artificial micro-/nanodevices which can convert chemical, light and electric energies to self-propelled motion. Speed is one of the key parameters for evaluating the motion of colloid motors. It is very important to control the movement speed and state of colloid motors efficiently for the applications in the fields such as drug delivery, nano-manipulation, and biological detection. We have fabricated the self-propelled Janus colloid motors which are drove by bubble propulsion and modified by polymer brushes. The polymer brushes can response to different types of anions by changing the configuration of the polymer chains. Thus, the control over the motion speed and "on/off" state has been realized by adjusting the type and concentration of the anion.
引文
[1]Lin X.K.;Wu Z.G.;Wu Y.J.;Xuan M.J.;He Q.*Adv.Mater.2016,28:1060
    [2]Xuan M.J.;Shao J.X.;Lin X.K.;Dai L.R.*;He Q.*ChemP hysC hem.2014,15(11):2255
    [3]Wu Y.J.;Wu Z.G.;Lin X.K.;He Q.*;Li J.B.*ACS Nano 2012,6:10910
    [4]Lin,X.K.;He,Q.;Li,J.B.*Chem.Soc.Rev.2012,41:3584

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