Controllable ion transport induced by pH gradient in a thermally crosslinked submicrochannel heterogeneous membrane,Analyst

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Controllable ion transport induced by pH gradient in a thermally crosslinked submicrochannel heterogeneous membrane
Analyst ( IF 3.6 ) Pub Date : 2021-09-29 , DOI: 10.1039/d1an01522b
Yuan-Ju Tang _{1,

2} , Shu-Jie Zhang ₁ , Zi-Tao Zhong ₁ , Wen-Ming Su ₃ , Yuan-Di Zhao _{1,

4}

Affiliation

Solid-state nanochannels have attracted considerable attention for their similar ion transport properties to biological ion channels. The construction of porous ion channels with good stability at the submicro/micrometer scale is very beneficial to develop large-area ion channel devices. In this manuscript, based on in-situ thermal crosslinking of a small organic molecule containing triphenylamine and styrene groups, we construct a heterogeneous membrane with asymmetrical charge and wettability on cylindrical anodic aluminum oxide (AAO) channels (D ≈ 319 nm). This heterogeneous membrane has typical ion current rectification characteristics with a high rectification ratio of 36.9 and good stability. This work provides an effective strategy for the construction of submicrochannel heterogeneous membranes and also broadens the application range of bionic ion channels.

中文翻译：

热交联亚微通道异质膜中 pH 梯度诱导的可控离子传输

固态纳米通道因其与生物离子通道相似的离子传输特性而引起了相当大的关注。在亚微米/微米尺度构建具有良好稳定性的多孔离子通道非常有利于开发大面积离子通道器件。在这份手稿中，基于含有三苯胺和苯乙烯基团的有机小分子的原位热交联，我们在圆柱形阳极氧化铝 (AAO) 通道上构建了具有不对称电荷和润湿性的异质膜 ( D≈ 319 纳米）。这种异质膜具有典型的离子流整流特性，整流比高达36.9，稳定性好。这项工作为亚微通道异质膜的构建提供了一种有效的策略，也拓宽了仿生离子通道的应用范围。

更新日期：2021-10-13

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