Abstract
A perylene-containing polyimide (PPI) has been successfully synthesized by thermal polycondensation of perylene-3,4,9,10-tetracarboxylic acid dianhydride and 2,2′-(ethylenedioxy)-diethylamine at high temperature. The as-prepared graphite oxide was ultrasonically exfoliated followed by solvothermal-reduction in N-methyl-2-pyrrolidone in the presence of PPI, yielding PPI-functionalized graphene nanosheets. It was found that PPI chains were non-covalently attached to the conjugated basal plane of graphene to form self-assembly nanostructures by π–π stacking. The present work may open a new route for the fabrication of polymer composites containing graphene.
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