| 主权项 |
1. An organic electroluminescent compound represented by the following formula 1: wherein L represents a single bond, or a substituted or unsubstituted (C6-C30)arylene group; X represents —O—, —S—, —N(R5)—, —C(R6)(R7)— or —Si(R8)(R9)—; Y1 and Y2 each independently represent —O—, —S—, —C(R10)(R11)—, —Si(R12)(R13)— or —N(R14)—, provided that Y1 and Y2 do not simultaneously exist; R1 to R4 each independently represent hydrogen, deuterium, a halogen, a substituted or unsubstituted (C1-C30)alkyl group, a substituted or unsubstituted (C6-C30)aryl group, a substituted or unsubstituted 3- to 30-membered heteroaryl group, —NR15R16, or —SiR17R18R19; or are linked to an adjacent substituent(s) to form a mono- or polycyclic, 3- to 30-membered alicyclic or aromatic ring whose carbon atom(s) may be replaced with at least one hetero atom selected from nitrogen, oxygen and sulfur; R5 to R14, and R15 to R19 each independently represent hydrogen, deuterium, a halogen, a substituted or unsubstituted (C1-C30)alkyl group, a substituted or unsubstituted (C6-C30)aryl group, or a substituted or unsubstituted 3- to 30-membered heteroaryl group; or are linked to an adjacent substituent(s) to form a mono- or polycyclic, 3- to 30-membered alicyclic or aromatic ring whose carbon atom(s) may be replaced with at least one hetero atom selected from nitrogen, oxygen and sulfur; a, b and c each independently represent an integer of 1 to 4; where a, b or c is an integer of 2 or more, each of R1, R2 and R3 may be the same or different; d represents an integer of 1 to 3; where d is an integer of 2 or more, each of R4 may be the same or different; and the heteroaryl group contains at least one hetero atom selected from B, N, O, S, P(═O), Si and P. |
