Polycyclic aromatic compound

A polycyclic aromatic compound consisting of a substructure represented by Formula (1A) and at least two substructures represented by Formula (1B):

• in Formula (1A) and Formula (1B),
• A ring and B ring are each independently an aryl ring which may be substituted or a heteroaryl ring which may be substituted,
• RXD is an aryl which may be substituted, a heteroaryl which may be substituted, an alkyl which may be substituted, or a cycloalkyl which may be substituted, and may be bonded to A ring via a dashed-line which is —X— or single bond,
• RXD may be bonded to B ring via a dashed-line which is —X—, —X′—, or single bond,
• each of C rings is independently an aryl ring which may be substituted or a heteroaryl ring which may be substituted, and may be bonded to a ring to which the substructure represented by Formula (1B) is bonded or X at a position of (*) via a dashed line which is —X— or single bond,
• RXE is an aryl which may be substituted, a heteroaryl which may be substituted, an alkyl which may be substituted, or a cycloalkyl which may be substituted, and may be bonded to a ring to which the substructure represented by Formula (1B) is bonded or X at a position of (*) via a dashed line which is —X— or single bond,
• RXE may be bonded to C ring via a dashed-line which is —X—, —X′—, or single bond, the substructure represented by Formula (1B) is bonded to a ring constituting atom of the aryl or heteroaryl ring in one selected from the group consisting of A ring, B ring and RXD, and C ring and RXE in another substructure represented by Formula (1B) at position *,
• each of Y is independently B, P, P═O, or P═S,
• each of X is independently >C(—R)2, >N—R, >O, >Si(—R)2, >S, or >Se,
• X′ is an arylene, a heteroarylene, or a binary linking group consisting of a combination of an arylene or a heteroarylene and one or more selected from the group consisting of >C(—R)2, >N—R, >O, >Si(—R)2, and >S,
• R in >N—R in X and X′ is hydrogen, an aryl which may be substituted, a heteroaryl which may be substituted, an alkyl which may be substituted, a cycloalkyl which may be substituted or a bonding hand to (*), R in >C(—R)2 and >Si(—R)2 in X and X′ are hydrogen, an aryl which may be substituted, an alkyl which may be substituted, or a cycloalkyl which may be substituted, two R's in each >C(—R)2 and >Si(—R)2 may be bonded to each other to form a ring, and at least one of R in >N—R, >C(—R)2 and >Si(—R)2 may be bonded to at least one of A ring, B ring, C ring, RXD, or RXE, via a linking group or single bond,
• at least one selected from the group consisting of aryl rings and heteroaryl rings in the polycyclic aromatic compound may be fused with at least one cycloalkane, at least one hydrogen in the cycloalkane may be substituted, and at least one —CH2— in the cycloalkane may be replaced with —O—, and
• at least one hydrogen in the polycyclic aromatic compound may be replaced with deuterium, cyano, or halogen.