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1: A compound represented by formula (1): wherein one of R1 and R2 represents a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms and the other represents a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 50 ring atoms, a halogen atom, a substituted or unsubstituted fluoroalkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted fluoroalkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 50 ring carbon atoms, or a cyano group; or both R1 and R2 each independently represent a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms; when one or both of R1 and R2 represents a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, the aryl group and a benzene ring to which R1 or R2 is bonded may be crosslinked; Ar1 represents a group represented by formula (2) or (3); Ar2 represents a group selected from the group consisting of a group represented by formula (2), a group represented by formula (3), and a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms:wherein in formula (2):
X represents an oxygen atom or a sulfur atom; L1 represents a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms; y represents 0 or 1, and when y is 0, (L1)0 represents a single bond; R3 represents a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 50 ring atoms, a halogen atom, a substituted or unsubstituted fluoroalkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted fluoroalkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 50 ring carbon atoms, or a cyano group; and m represents an integer of 0 to 4, when m is an integer of 2 to 4, two to four groups R3 may be the same or different and may be bonded to each other to form a ring, and when m is 0, (R3)0 represents a hydrogen atom;wherein in formula (3):
R5 and R6 each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 10 to 50 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 50 ring atoms, a halogen atom, a substituted or unsubstituted fluoroalkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted fluoroalkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 50 ring carbon atoms, or a cyano group; L2 represents a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms; z represents 0 or 1, and when z is 0, (L2)0 represents a single bond; R4 represents a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, a halogen atom, a substituted or unsubstituted fluoroalkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted fluoroalkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 50 ring carbon atoms, or a cyano group; and n represents an integer of 0 to 4, when n is an integer of 2 to 4, two to four groups R4 may be the same or different and may be bonded to each other to form a ring, and when n is 0, (R4)0 represents a hydrogen atom. |
