pH-Regulated Ionic Diode Based on an Asymmetric Shaped Multiple-Layer Polymer Membrane,Analytical Chemistry

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pH-Regulated Ionic Diode Based on an Asymmetric Shaped Multiple-Layer Polymer Membrane
Analytical Chemistry ( IF 6.7 ) Pub Date : 2022-12-19 , DOI: 10.1021/acs.analchem.2c04369
Jun Li ₁ , Kaiping Zhang ₁ , Dongqing Li ₁

Affiliation

Smart artificial ion channels with tunable properties have wide applications in many fields to achieve ion transport manipulation. Most reported artificial ions are constructed with vertical structures, limiting the further integration of ionic diodes into complex iontronic systems. Inspired by the asymmetric concentration polarization induced by the asymmetric geometry of nanochannels, a novel method is developed to construct horizontally arranged and pH-regulated ionic diodes in nanofluidic chips by self-assembling pH-responsive polymers. The effects of the fabrication and operation parameters on the performance of the ionic diode are systematically investigated. The current rectification ratio of the ionic diode can be modulated flexibly by regulating the pH conditions of the working fluid. An ionic diode bridge circuit for rectifying alternating current signals is built in a single nanofluidic chip and demonstrated, highlighting the feasibility of the ionic diode for complex iontronic system integration. The method presented in this paper provides a promising platform for the development of smart nanofluidic iontronic devices with widespread applicability in biological analysis, sensing, and logic computing.

中文翻译：

基于非对称形状多层聚合物膜的 pH 调节离子二极管

具有可调特性的智能人工离子通道在许多领域都有广泛的应用，以实现离子传输操纵。大多数报道的人工离子都是用垂直结构构建的，限制了离子二极管进一步集成到复杂的离子电子系统中。受纳米通道的不对称几何形状引起的不对称浓度极化的启发，开发了一种新方法，通过自组装 pH 响应聚合物在纳米流控芯片中构建水平排列和 pH 调节的离子二极管。系统地研究了制造和操作参数对离子二极管性能的影响。离子二极管的电流整流比可以通过调节工作液的pH条件来灵活调节。用于整流交流信号的离子二极管桥电路构建在单个纳米流体芯片中并进行了演示，突出了离子二极管用于复杂离子电子系统集成的可行性。本文提出的方法为智能纳米流体离子电子设备的开发提供了一个有前途的平台，该设备在生物分析、传感和逻辑计算中具有广泛的适用性。

更新日期：2022-12-19

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