Patent ID: 7220465

Claim:
A composition comprising at least one liquid crystal and at least one compound represented by a formula (1): wherein R 1 and R 2 respectively represent an optionally substituted aryl group or an optionally substituted heteroaryl group; R 7 and R 8 respectively represent an optionally substituted aryl group; R 3 , R 4 , R 5 and R 6 respectively represent a hydrogen atom or a substituent; and at least one of R 1 and R 2 is a group represented by a formula (a): —(B 1 )-{(Q) r -(B 2 )} n —C 1 Formula (a) wherein B 1 and B 2 respectively represent an optionally substituted arylene group or an optionally substituted heteroarylene group: Q is a divalent linking group: C 1 is an optionally substituted alkyl group, an optionally substituted cycloalkyl group, an optionally substituted alkoxy group, an optionally substituted alkoxycarbonyl group, an optionally substituted acyl group or an optionally substituted acyloxy group: r is 0 or 1; n is an integer of 1 to 3; and two of Q or two of B 2 may be identical to or different from each other when n is 2 or 3.