title: Pdop layer exhibiting zwitterionicity: a simple electrochemical interface for governing ion permeability.
abstract: Polydopamine film which contains amine groups and phenolic hydroxyl groups exhibits fully reversible, pH-switchable permselectivity for both cationic and anionic redox-active probe molecules. At high pH the film has a net negative charge that excludes anions but passes cations; at low pH it is positively charged and excludes cations but passes anions.
authors.affiliation: State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Yu
authors.forename: Jianxi
authors.initials: J
authors.lastname: Liu
authors.forename: Shujuan
authors.initials: S
authors.lastname: Liu
authors.forename: Feng
authors.initials: F
authors.lastname: Zhou