Patent ID: 8268402

Claim:
A process for producing a fullerene polymer film on a substrate, comprising: applying to a substrate a solution of a fullerene derivative having at least one partial structure represented by formula (1) and (2) on a fullerene framework: wherein R 1 and R 2 each, independently, represents a hydrocarbon group which may have any desired substituent, and R 1 and R 2 , in combination with any of a carbon atom, nitrogen atom, and oxygen atom bonded to both of R 1 and R 2 , may form a nitrogen-containing ring which may have any desired substituent; and pyrolyzing the fullerene derivative at a temperature which is higher than a pyrolysis temperature of the fullerene derivative and is lower than a pyrolysis temperature of a fullerene to form a fullerene polymer film on a substrate.