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自然界中的生物孔道在生命过程中具有重要的意义,在人工制备的仿生纳米器件上模仿生物孔道的离子输运性质是一项具有挑战性的课题.我们制备了一种基于人工聚合物薄膜的纳米门控器件,这种纳米门控器件的离子输运性质可以通过调节体系的pH和温度来调控.通过在人工聚合物薄膜上修饰功能分子聚赖氨酸(poly-L-Lysine)得到的门控器件能够模拟生物体中生物孔道的典型离子输运行为,其离子输运性能受体系pH的控制,可以通过调节体系的pH而限制纳米门控器件的导通方向.同时,在一定pH条件下调整体系温度也能够对离子输运性能产生影响,而在其他pH条件下,温度则不会对体系的离子输运性能产生明显的影响,即这种基于人工聚合物薄膜的纳米门控器件具有对pH和温度的协同响应性能.
Biological channels in nature are of great significance in the life process. It is a challenging task to mimic the ion transport properties of biological channels in artificial prepared biomimetic nanodevices. We have prepared a kind of artificial polymer film based Nano-gated devices, the ion transport properties of these nano-gated devices can be controlled by adjusting the pH and temperature of the system by modifying the artificial polymer film poly-L-lysine (poly-Lysine) The gating device can simulate the typical ion transport behavior of biological channels in organisms and its ion transport performance is controlled by the pH of the system and can limit the conduction direction of the nano gating device by adjusting the pH of the system.At the same time, Under the other conditions, the temperature will not have a significant impact on the ion transport properties of the system, that is, based on the artificial polymer film nano-gating The device has a synergistic response to pH and temperature.