摘要:
The present invention provides a novel methanofullerene derivative applicable as an organic semiconductor material in electronics devices such as organic FETs and electroluminescence devices and solar cells, represented by formula (I) wherein the average value of 13 C-NMR chemical shift values of carbons C 2 and C 2' on FL, bonded to C 1 is 80.10 ppm or greater, wherein FL represents fullerenes, X1 and X2 are each an aromatic hydrocarbon, an alkyl group or the like, C 2 and C 2 , are carbon atoms on FL, bonded to C 1 , and n is an integer of 1 to 10.