A fullerene molecule C60TH2-DcB was prepared by Prato reaction which provides better product yields and purity compared with the reaction for the synthesis of [60]methanofullerene analogues The C60TH2-DcB is readily soluble in common organic solvents and shows good thermal properties Field-effect transistors fabricated by solution processing exhibit good n-channel characteristics with a maximum mobility of 1 5 x 10(-3) cm(2) V(-1) s(-1) a threshold voltage of 11 V and on/off current ratio of 1 0x10(5) (C) 2010 Elsevier B V All rights reserved