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Liping Wen, Qian Liu, Jie Ma, Ye Tian, Cuihong Li, Zhishan Bo and Lei Jiang Malachite Green Derivative–Functionalized Single Nanochannel: Light-and-pH Dual-Driven Ionic Gating Advanced Materials 24

Article first published online: 27 SEP 2012 | DOI: 10.1002/adma.201202673

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A highly efficient and perfectly reversible ionic gate that can be activated by pH or UV light is demonstrated. Switching between the OFF state and the ON state is mainly dependent on the surface charge transition brought about by a malachite green derivative attached to the interior surface of an ion track-etched conical nanochannel, which makes it suitable for confined spaces. Applications in electronics, actuators, and biosensors can be foreseen.

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