Channel tunneling: We have prepared functional biomimetic nanochannels in polyethylene terephthalate (PET) polymer films (see illustration). We used p-sulfonatocalix[4]arene to modify the channel surface by flexible layer-by-layer electrostatic assembly. Using this method we were able to detect acetylcholine with high sensitivity.
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Wen et al. (2013) studied this question.
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