TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Disclosed): The fullerene derivative is prepared by heating liquid mixture of phenyl-C61-butyric acid methyl ester (PCBM), concentrated hydrochloric acid, acetic acid and toluene while stirring, moving the reaction liquid to separating funnel, washing the reaction liquid with water and concentrating under pressure reduction of the remaining organic phase, washing the obtained reaction material with methanol, ether, and toluene, transferring remaining crystal to the round bottom flask, adding carbon disulfide and thionyl chlorides to nitrogen atmosphere, stirring under overheating reflux for three days, setting as carboxylic acid chloride body, concentrating under pressure reduction of the reaction liquid, adding 1H,1H-perfluoro-3,6-dioxaheptan-1-ol, triethylamine, 4-dimethylamino pyridine and bromobenzene to the remaining reaction material at nitrogen atmosphere, and stirring for 2 days at room temperature. Preferred Definitions:    R 1=R 1a-(C pF 2pO) nb-Y 1-;    R 1a=F or 1-8C perfluoro alkoxy group;    p=1-3;    nb=1-1000;    Y 1=1-6C perfluoro alkylene chain;    L=-O-(CH 2) nc-, -S-(CH 2) nc-, -C(=O)-O-(CH 2) nc-, -C(=O)-(CH 2) nc-, or -N(-Rc)-C(=O)-(CH 2) nc-;    nc=1-4;    Rc=H and alkyl group;    R 2=6-14C aryl group;    na=1-5; and    B=60C fullerene.    EXAMPLE - The fullerene derivative was prepared by heating liquid mixture of 100 mg phenyl-C61-butyric acid methyl ester (PCBM), 6 ml concentrated hydrochloric acid, 15 ml acetic acid and 15 ml toluene while stirring at 100 degrees C for 30 hours, moving the reaction liquid to separating funnel, washing the reaction liquid with water and concentrating under pressure reduction of the remaining organic phase, washing the obtained reaction material with methanol, ether, and toluene, transferring remaining crystal to the round bottom flask, adding 15 ml carbon disulfide and 1.5 ml thionyl chlorides to nitrogen atmosphere, stirring under overheating reflux for three days, setting as carboxylic acid chloride body, concentrating under pressure reduction of the reaction liquid, adding 282 mg 1H,1H-perfluoro-3,6-dioxaheptan-1-ol (CF 3OCF 2CF 2OCF 2CH 2OH), 2 ml triethylamine, 25 mg 4-dimethylamino pyridine and 10 ml bromobenzene to the remaining reaction material at nitrogen atmosphere at 0 degrees C, stirring for 2 days at room temperature.