Membrane electrochemically switchable

Gold Nanotubule Membranes with Electrochemically Switchable Ion-Transport Selectivity 24... 

IV. GOLD NANOTUBULE MEMBRANES WITH ELECTROCHEMICALLY SWITCHABLE ION-TRANSPORT SELECTIVITY... 

Nishizawa, M., Menon, V.P., Martin, C.R. Metal nanotubule membranes with electrochemically switchable ion-transport selectivity. Science 268, 700-702, 1995. 

Burgmayer P and Murray R W 1984 Ion Gate Electrodes. Polypyrrole as a switchable ion conductor membrane J. Phys. Chem. 88 2515-21 Otero T F and de Larreta E 1988 Conductivity and capacity of polythiophene films impedance study J. Electroanal. Chem. 244 311-18 Sunde S, Hagen G and Odegird R 1993 Impedance analysis of the electrochemical doping of poly(3-methyl-thiophene) from aqueous nitrate solutions J. Electroanal. Chem. 345 59-82 Zaborsky O R 1973 Immobilized Enzymes (Cleveland, OH Chemical Rubber Company) (see especially pp 69,87)... 

M. Hepel, Composite polypyrrole films switchable between the anion- and cation-exchange states, Electrochim. Acta, 1996, 41, 63 C. Ehrenbeck and K. Jiittner, Development of an anion/cation permeable free-standing membrane based on electrochemical switching of polypyrrole, Electrochim. Acta, 1996, 41, 511 A.C. Partridge, C.B. Milestone, C.O. Too and G.G. Wallace, Polypyrrole based cation transport membranes,./ Membr. Sci., 1999,152, 61. 

Several studies have reported a switchable permeabihty for water and organics that is dependent on the redox state. For electrochemically formed PANI and PP on metal or conducting grids, a large increase in water permeability was observed for doped films compared with undoped (reduced) films. This can be explained by stmc-tural changes and an increase in hydrophilicity during oxidation [67]. Membranes of 3-hexyl-PT show a decrease in permeabihty for dopamine with increasing oxi-... 

---