| abstract |
A biphenyl derivative is provided, which is shown in formula (1): n n n n n n n n n n wherein X represents one of the groups shown in formula (2) to formula (5): n n n n n n n n n n and n R 11 to R 15 , R 21 to R 25 , R 31 to R 35 , R 41 to R 45 , R 51 to R 55 , and R 61 to R 65 are independently selected from one of a hydrogen atom, a fluorine atom, a cyano group, a substituted or non-substituted straight-chain or branched-chain alkyl group, a substituted or non-substituted cycloalkyl group, a substituted or non-substituted straight-chain or branched-chain alkoxy group, a substituted or non-substituted straight-chain or branched-chain thioalkyl group, and a substituted or non-substituted straight-chain or branched-chain alkenyl group. |