| abstract |
A compound represented by formula (I) or formula (1I): n n n n n n n n n n n n in formula (I), R 3 represents an electron donating group, R 4 represents a hydrogen atom, a substituted or unsubstituted aryl group or an electron donating group, L 3 represents a substituted or unsubstituted heteroarylene group or a substituted or unsubstituted arylene group, L 4 represents a single bond, a substituted or unsubstituted heteroarylene group or a substituted or unsubstituted arylene group, L 3 and L 4 may bond together to form a ring with the carbon atoms to which they are bonded, n n n n n n n n n n n n n n n n in formula (II), R 5 represents an electron donating group, R 6 represents a hydrogen atom, a substituted or unsubstituted aryl group or an electron donating group, L 5 represents a substituted or unsubstituted heteroarylene group or a substituted or unsubstituted arylene group, L 6 represents a single bond, a substituted or unsubstituted heteroarylene group or a substituted or unsubstituted arylene group. |