Fabrication and electrochemical properties of novel fullerene cluster microparticles

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A series of fullerene-aliphatic diamine adduct particle was synthesized by simply mixing of solutions of corresponding fullerenes and amines. From results of the reaction between fullerenes and amines, formation mechanism of adduct particles was investigated.Fullerene-diamine adduct particles were solubilized in hydrophobic organic solvents by the addition of alkyl acid chloride. An organic thin-film solar cell using polythiophene and the solubilized fullerene-diamine adduct was fabricated and evaluated. The photovoltaic performance of the solar cell suggested that the solubilized fullerene-diamine adduct works as n-type semiconductor. Thin-film of fullerene-diamine adduct as n-type semiconductor was also possible to fabricate on the surface of amino-substituted substrate. C60 and amino-substituted porphyrin composite was also prepared by simply mixing C60 and the porphyrin in organic solvent. The composite contributed to photoelectric conversion.