Patent ID: 7795452

Claim:
A charge transport organic material comprising an electron accepting dopant substance or a hole accepting dopant substance, and a compound of the general formula (1) having a 1,4-dithiin ring wherein R 1 , R 2 , R 3 and R 4 independently represent hydrogen, a hydroxyl group, a halogen group, an amino group, a silanol group, a thiol group, a carboxyl group, a sulfonic acid group, a phosphoric acid group, a phosphoester group, an ester group, a thioester group, an amido group, a nitro group, a monovalent hydrocarbon group, an organooxy group, an organoamino group, an organosilyl group, an organothio group, an acyl group or a sulfone group, X and Y independently represent at least one member of substituted or unsubstituted, divalent conjugated units selected from aniline, thiophene, furan, pyrrole, ethynylene, vinylene, phenylene, naphthalene, anthracene, imidazole, oxazole, oxadiazole, quinoline, quinoxaline, pyridine, pyrimidine, pyrazine, phenylenevinylene, fluorene, carbazole, triarylamines, metal or metal-free phthalocyanine, and metal or metal-free porphyrin, two sulfur atoms contained in the dithiin ring may independently be in the form of an SO group or an SO 2 group, and p and r independently represent 0 or an integer of 1 or over, q represents an integer of 1 or over, provided that p+q+r≦20 is satisfied.