Patent ID: 7571894

Claim:
A 1,3,6,8-tetrasubstituted pyrene compound represented by the following formula (1), in formula (1), R's have, independently from each other, a structure represented by the following formula (2), in formula (2), R 1 -R 5 are, independently from each other, hydrogen, a straight-chain or branched-chain aliphatic group, an aromatic group, an alicyclic group, or one of the groups represented by the following formulae (3)-(6), in formulae (3) to (6), R 6 -R 12 are, independently from each other, hydrogen, a straight-chain or branched-chain aliphatic group, an aromatic group, or an alicyclic group and at least one of R 1 -R 5 is represented by formulae (3) and R 6 and R 7 in formula (3) are, independently from each other, an aromatic group or at least one of R 1 -R 5 is represented by formula (6) and R 12 in said formula (6) is an aromatic group.