PURPOSE:To offer an electronic conductive high polymer superior in electronic conductivity and moreover superior in mechanical strength and molding process characteristic by crosslinking an electronic conductive high polymer having at least one reactive radical. CONSTITUTION:A formula I or a formula II or the like is shown as an example of a crosslinking agent crosslinking an electronic conductive high polymer. And a formula III or a formula IV or the like is shown, as an example of an electronic conductive high polymer having a reactive radical. And 10g of the electronic conductive high polymer in the formula III is dispersed in 100ml of water, and is thereafter bar-code-coated on a Teflon plate. Furthermore, aqueous solution of the crosslinking agent in the formula II is overcoated so as to be formula III/formula II =95/5 (weight ratio). The thin film aimed is obtained by peeling from on the Teflon plate, after placing under nitrogen flow at 60 deg.C for one day.
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