X₁ to X₁₈ and X₂₁ to X₃₈ are each independently selected from a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted amino group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted heteroaryloxy group, a silyl group, and a cyano group,

wherein at least one of X₁ to X₈ and at least one of X₂₁ to X₂₈ are substituted or unsubstituted amino groups, groups bonded to nitrogen atoms of the substituted or unsubstituted amino groups are optionally taken together to form a ring structure, the groups bonded to the nitrogen atoms of the substituted or unsubstituted amino groups are each optionally taken together with any of adjacent X₁ to X₈ or any of adjacent X₂₁ to X₂₈ to form a ring, and the groups bonded to the nitrogen atoms of the substituted or unsubstituted amino groups are each optionally taken together with any of adjacent X₁ to X₈ or any of adjacent X₂₁ to X₂₈ with oxygen or sulfur provided therebetween to form a ring; and

each Y is oxygen, sulfur, selenium, tellurium, or a CR₁CR₂ group and are optionally the same or different,

wherein R₁ and R₂ are each independently selected from a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted amino group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted heteroaryloxy group, a silyl group, and a cyano group.