title: Permeation regulation of charged species by the component change of polyion complex membranes.
abstract: Three kinds of polyion complex membranes were prepared on a glassy carbon electrode: polycation (poly-L-lysine)-rich membrane, polyanion (DNA)-rich membrane, and equivalent membrane. The permeation of electroactive species (e.g., hydrogen peroxide, L-ascorbate, urate, dopamine) through the membrane was measured by the oxidation current of species at base electrode. Permeation of the anionic species can be depressed through the anion-rich membrane, and permeation of the cation can also be regulated through the cation-rich membrane. It is obvious that the charge exclusion can be controlled by changing the component ratio of polycation and polyanion during preparation.
authors.affiliation: Tsukuba Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan. s.yabuki@aist.go.jp
authors.forename: Soichi
authors.initials: S
authors.lastname: Yabuki
authors.forename: Shin-Ichiro
authors.initials: S
authors.lastname: Fujii
authors.forename: Fumio
authors.initials: F
authors.lastname: Mizutani
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Hirata
mesh_terms: D001205:Ascorbic Acid / Q000494:pharmacology; D004298:Dopamine / Q000494:pharmacology; D004566:Electrodes; D006861:Hydrogen Peroxide / Q000494:pharmacology; D008567:Membranes, Artificial; D010084:Oxidation-Reduction / Q000187:drug effects; D055672:Static Electricity; D013997:Time Factors
chemical_list: D008567:Membranes, Artificial; D006861:Hydrogen Peroxide; D001205:Ascorbic Acid; D004298:Dopamine