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Ion (K+ and Cs+) permeation through a ternary composite membrane composed of polycarbonate–liquid crystal [N-(4-ethoxybenzylidene)-4-butylaniline (EBBA)]–fluorocarbon-containing crown ether (2b) was completely thermocontrolled; ion permeation above TKN(crystal–nematic liquid crystal phase transition temperature of EBBA) was fast while it was completely suppressed below TKN.
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Shinkai et al. (1986) studied this question.
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