SYNOPSISCopolymers of bis [ 4- ( N,N-dimethylamino ) phenyl] -4-vinylphenylmethanenitrile (vinyl Malachite Green leuconitrile) with methyl methacrylate or w-methoxyoligo (oxyethylene ) methacrylate have been synthesized, aiming a t designing one-component-type organic polymers for photoswitchable ion-conducting films. The triphenylmethanenitrile copolymers with w-methoxyoligo ( oxyethylene ) methacrylate were found to undergo ionic-conductivity switching by turning on and off UV light a t ambient temperature, owing to their low glass transition temperature. 0
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