Premium
Electroresponsive Nanoporous Membranes by Coating Anodized Alumina with Poly(3,4‐ethylenedioxythiophene) and Polypyrrole
Author(s) -
Abelow Alexis E.,
Persson Kristin M.,
Jager Edwin W. H.,
Berggren Magnus,
Zharov Ilya
Publication year - 2014
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201200456
Subject(s) - materials science , membrane , polymer , nanoporous , polypyrrole , chemical engineering , polymer chemistry , polymerization , coating , nanopore , conductive polymer , anodizing , poly(3,4 ethylenedioxythiophene) , nanotechnology , composite material , chemistry , aluminium , biochemistry , engineering
Electrically‐active nanoporous membranes are prepared by coating the surface of anodized alumina with electroactive polymers using vapor phase polymerization with four combinations of conjugated polymers and doping ions: poly(3,4‐ethylenedioxythiophone) and polypyrrole, FeCl 3 and FeTs 3 . The permeability of the polymer‐coated membranes is measured as a function of the applied electric potential. A reversible three‐fold increase is found in molecular flux of a neutral dye for membranes in oxidized state compared to that in the reduced state. After analyzing various factors that may affect the molecular transport through these membranes, it is concluded that the observed behavior results mostly from swelling/deswelling of the polymers and from the confinement of the polymers inside the nanopores.