Patent ID: 7261953

Claim:
An organic electroluminescent device comprising: a pair of electrodes; and a layer that is disposed between the pair of electrodes and comprises a compound represented by the following formula (1): wherein A 1 and A 2 each independently represent an aromatic ring and may be substituents at any of positions 2, 3, 4 and 5 of the thiophene ring; B represents a substituent having a positive Hammett substituent constant σp; C represents a substituent having a negative Hammett substituent constant σp; n1 and n2 each independently represent 0, 1 or 2, wherein n1 and n2 are not 0 at the same time; and the thiophene ring may have a substituent selected from the group consisting of an alkyl group having 1 to 8 carbon atoms, an alkoxy group and a halogen atom.