Proton‐Gated Rectification Regimes in Nanofluidic Diodes Switched by Chemical Effectors,Small

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Proton‐Gated Rectification Regimes in Nanofluidic Diodes Switched by Chemical Effectors
Small ( IF 13.0 ) Pub Date : 2018-02-05 , DOI: 10.1002/smll.201703144
Gonzalo Pérez-Mitta ₁ , Waldemar A. Marmisolle ₁ , Loïc Burr ₂ , María Eugenia Toimil-Molares ₂ , Christina Trautmann _{2,

3} , Omar Azzaroni ₁

Affiliation

During the last decade, nanofluidic devices based on solid‐state nanopores and nanochannels have come into scene in materials science and will not leave anytime soon. One of the main reasons for this is the excellent control over ionic transport exerted by such devices that promises further important advances when integrated into more complex molecular devices. As a result, pH, temperature, and voltage‐regulated devices have been obtained. However, nowadays, there is still a necessity for molecule‐driven nanofluidic devices. Here, a sugar‐regulated pH‐responsive nanofluidic diode is presented obtained by surface modification of conical polycarbonate nanochannels with electropolymerized 3‐aminophenylboronic acid. Control over the ionic transport has been achieved by a successful decoration of asymmetric nanochannels with integrated molecular systems. The as‐synthesized boronate‐appended zwitterionic polymer exhibits an acid‐base equilibrium that depends on the concentration of sugar, which ultimately acts as a chemical effector setting different pH‐dependent rectification regimes. As a result, the same nanodevice can perform completely different proton‐regulated nanofluidic operations, i.e., anion‐driven rectification, cation‐driven rectification, and no rectification, by simply varying the concentration of fructose in the electrolyte solution.

中文翻译：

化学效应器转换的纳米流体二极管中的质子门控整流体制

在过去的十年中，基于固态纳米孔和纳米通道的纳米流体装置已在材料科学中崭露头角，并且不会很快面世。造成这种情况的主要原因之一是对此类设备所施加的离子传输的出色控制，当集成到更复杂的分子设备中时，有望进一步取得重要进展。结果，获得了pH，温度和电压调节的设备。但是，如今，仍然需要分子驱动的纳米流体装置。在这里，提出了一种糖调节pH响应的纳米流体二极管，该二极管通过用电聚合的3-氨基苯基硼酸对锥形聚碳酸酯纳米通道进行表面修饰而获得。通过使用集成分子系统成功装饰不对称纳米通道，可以实现对离子传输的控制。合成后的硼酸酯附加的两性离子聚合物显示出取决于糖浓度的酸碱平衡，该平衡最终充当设置不同pH依赖的精馏机制的化学效应器。结果，同一纳米设备可以通过简单地改变电解质溶液中果糖的浓度来执行完全不同的质子调节的纳米流体操作，即阴离子驱动的精馏，阳离子驱动的精馏和不进行精馏。最终充当化学效应器，设置不同的pH依赖的精馏方案。结果，同一纳米设备可以通过简单地改变电解质溶液中果糖的浓度来执行完全不同的质子调节的纳米流体操作，即阴离子驱动的精馏，阳离子驱动的精馏和不进行精馏。最终充当化学效应器，设置不同的pH依赖的精馏方案。结果，同一纳米设备可以通过简单地改变电解质溶液中果糖的浓度来执行完全不同的质子调节的纳米流体操作，即阴离子驱动的精馏，阳离子驱动的精馏和不进行精馏。

更新日期：2018-02-05

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