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Bilayer‐Immobilized Films Containing Mesogenic Azobenzene Amphiphiles—Electrically Controllable Permeability
Author(s) -
Okahata Yoshio,
Fujita Shinsuke,
Iizuka Noami
Publication year - 1986
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198607511
Subject(s) - bilayer , membrane , azobenzene , electric field , amphiphile , permeability (electromagnetism) , materials science , perpendicular , mesogen , chemical engineering , polymer chemistry , chemistry , polymer , composite material , copolymer , liquid crystalline , biochemistry , physics , geometry , mathematics , quantum mechanics , engineering
A model system for the study of transport phenomena in membranes consists of bilayer films of the cations 1 or 2 and polystyrenesulfonate anions. These bilayer films are immobilized, in turn, on a polyester grid. Application of an electric field increases the permeability of these artificial membranes with respect to a water‐soluble, neutral dye molecule. Surprisingly, however, only a field parallel to the membrane is effective in the case of 1 and only a field perpendicular to the membrane in that of 2 .