Radical-Containing Block Copolymers: Microphase Separation and Charge Storage/Transport Modulation in the Organic Thin Film Devices

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Redox-active radicals and ion pairs for charge compensation were incorporated into the microphase-separated domains, to modulate charge-injection/-transport properties, especially for a new design of organic nonvolatile memory. Radical/ion-containing block copolymers were prepared via stepwise controlled radical polymerization, or selective incorporation of TEMPO-ionic liquids into block copolymers, which construct the well-defined radical- and ionic-domains, and their interface. The correlation between the morphology and memory characteristics was investigated.