Varga Imre, Szalai Istvan, Mészaros Robert, Gilanyi Tibor
Institute of Chemistry, L. Eötvös University, PO Box 32, H-1518 Budapest 112, Hungary.
J Phys Chem B. 2006 Oct 19;110(41):20297-301. doi: 10.1021/jp064282m.
A novel method is presented for the design of robust, sustained nanochemomechanical oscillators. The approach is based on the switching of chemoresponsive nanogel beads between their collapsed and swollen state by coupling them to an appropriately chosen nonlinear reaction. The presented system utilizes a proton activated oscillatory reaction and pH-sensitive nanobeads of gel that provide more than an order of magnitude volume change. A key point of our approach is the control of the colloid stability of the nanobeads of gel in a wide range of experimental parameters (pH, ionic strength, temperature) without interfering with the swelling characteristics of the nanogel particles. This was achieved by utilizing the interaction of nanogels with ionic surfactants.
本文提出了一种用于设计稳健、持续的纳米化学机械振荡器的新方法。该方法基于通过将化学响应性纳米凝胶珠与适当选择的非线性反应耦合，使其在塌陷状态和肿胀状态之间切换。所提出的系统利用质子活化振荡反应和凝胶的pH敏感纳米珠，其提供超过一个数量级的体积变化。我们方法的一个关键点是在广泛的实验参数（pH、离子强度、温度）范围内控制纳米凝胶珠的胶体稳定性，同时不干扰纳米凝胶颗粒的膨胀特性。这是通过利用纳米凝胶与离子表面活性剂的相互作用来实现的。
