Single conical nanopores were functionalised layer by layer with weak polyelectrolytes. We studied their influence on the ionic diode properties We have considered different couples of polyelectrolytes: poly-l-lysine/poly(acrylic acid) and poly(ethyleneimine)/poly(acrylic acid) as well as the influence of cross-linking. The results show that the nanopores decorated with poly(ethyleneimine)/poly(acrylic acid) exhibit an interesting behavior. Indeed, at pH 3, the nanopore is open only at the low salt concentration, while at pH 7, it is already open. The nanopores functionalized with poly-l-lysine/poly(acrylic acid) do not show an inversion of ionic transport properties with the pH as expected. After cross-linked to prevent large conformational changes, the ionic diode properties are dependent on the pH.

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聚电解质多层膜对锥形纳米孔离子电流整流的影响

单个圆锥形纳米孔被弱聚电解质逐层功能化。我们研究了它们对离子二极管性能的影响。我们考虑了不同的聚电解质对：聚-1-赖氨酸/聚（丙烯酸）和聚（乙烯亚胺）/聚（丙烯酸）以及交联的影响。结果表明，用聚（乙烯亚胺）/聚（丙烯酸）修饰的纳米孔表现出有趣的行为。实际上，在pH 3时，纳米孔仅在低盐浓度下才开放，而在pH 7时，纳米孔已经开放。与聚功能化纳米孔升-赖氨酸/聚（丙烯酸）没有显示出与预期的pH值相反的离子传输性能。交联以防止大的构象变化后，离子二极管的性能取决于pH值。