压力对带有pH值可调聚电解质刷的仿生纳米孔中离子选择性的影响

发布时间：2018-04-24 15:30

本文选题：pH值可调聚电解质层 + 合成纳米孔　；参考：《电化学》2017年01期

【摘要】：具有pH值可调聚电解质(Polyelectrolyte,PE)刷的合成纳米孔的仿生离子通道在纳米尺度下离子、流体和生物粒子的主动运输控制方面具有重大应用潜力.离子选择性是纳流体设备中离子传输的重要现象,具有很大的现实意义和实用价值.本文提出了施加压力控制纳米孔中离子选择度的方法,综合研究了溶液pH值、浓度、外加电压和压力对离子选择度的影响.仿真结果表明,离子选择度对压力的刺激是敏感的,且不像电压对离子选择度的影响会受到溶液pH值和浓度的制约,且方向不定,速度不可控;压力对离子选择度的影响不受溶液性质制约,并且灵活可控.该结果对设计带pH值可调聚电解质刷的纳米孔有重要的启发作用.
[Abstract]:Biomimetic ion channels with pH adjustable polyelectrolyte polyelectrolyte (PE) brushes have great potential applications in controlling the active transport of ions, fluids and biological particles at nanoscale. Ion selectivity is an important phenomenon of ion transport in nano fluid equipment, which has great practical significance and practical value. In this paper, a method of controlling ion selectivity in nano-pore by applying pressure is put forward. The effects of pH value, concentration, applied voltage and pressure on ion selectivity are studied synthetically. The simulation results show that the ion selectivity is sensitive to the pressure stimulation, and the influence of voltage on the ion selectivity is restricted by the pH value and the concentration of the solution, and the direction is uncertain and the velocity is not controllable. The effect of pressure on ion selectivity is not restricted by the properties of the solution and is flexible and controllable. The results have important implications for the design of nano-pores with pH adjustable polyelectrolyte brushes.
【作者单位】：南京理工大学电子工程与光电技术学院;国立云林科技大学化学工程与材料工程系;中国电波传播研究所;
【基金】：国家自然科学基金项目(No.61271230,No.61472190)资助
【分类号】：O631;TB383.1

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