Phosphaphenanthrene-carbazole-based organic light-emitting compound, and organic light-emitting device comprising same

A phosphaphenanthrene-carbazole-based organic light-emitting compound represented by the following Chemical Formula 1:

• in Chemical Formula 1,
• R1 is hydrogen, (C1-C30)alkyl, (C6-C30)aryl, (C3-C30)heteroaryl, (C2-C10)alkenyl, (C2-C18)alkynyl, amino, mono- or di(C1-C30)alkylamino, or mono- or di(C6-C30)arylamino;
• R2 is hydrogen, hydroxyl, (C1-C30)alkyl, (C6-C30)aryl, (C3-C30)heteroaryl, N-carbazolyl, (C2-C10)alkenyl, (C2-C18)alkynyl, (C6-C30)aryloxy, (C1-C18)alkyloxy, (C1-C30)alkylcarbonyloxy, amino, mono- or di(C1-C30)alkylamino, or mono- or di(C6-C30)arylamino;
• R3 and R4 each are independently hydrogen, (C1-C30)alkyl, (C6-C30)aryl, (C3-C30)heteroaryl, (C6-C30)ar(C1-C30)alkyl, (C2-C10)alkenyl, (C2-C18)alkynyl(C1-C30)alkylcarbonyl, (C2-C10)alkenylcarbonyl, amino, mono- or di(C1-C30)alkylamino, or mono- or di(C6-C30)arylamino;
• R5 to R12 are the same as or different from each other, each independently, and independently hydrogen, straight- or branched-chain (C1-C30)alkyl, straight- or branched-chain (C1-C30)alkyl including oxygen, nitrogen or sulfur, (C1-C30)alkoxy, (C3-C30)cycloalkyl, (C3-C30)cycloalkyl(C1-C30)alkyl, (C6-C30)aryl, halogen, cyano, amino, mono- or di(C1-C30)alkylamino, mono- or di(C6-C30)arylamino, hydroxy, nitro, mono- or di-benzylamino, or (C3-C30)cycloalkylamino;
• and
• aryl, heteroaryl, alkenyl, alkynyl, or amino of R1, aryl, heteroaryl, N-carbazolyl, alkenyl, alkynyl, aryloxy, alkyloxy, or amino of R2, and alkyl, aryl, heteroaryl, aralkyl, alkenyl, alkynyl, or amino of R3 and R4 may be further substituted with at least one selected from straight- or branched-chain (C1-C30)alkyl substituted or unsubstituted with halogen, (C3-C30)cycloalkyl, (C3-C30)cycloalkyl(C1-C30)alkyl, (C2-C10)alkenyl, (C2-C10)alkynyl, (C6-C30)aryl, straight- or branched chain (C1-C30)alkyl including oxygen, nitrogen or sulfur, (C1-C30)alkoxy, (C3-C30)heteroaryl, N-carbazolyl, 3- to 7-membered heterocycloalkyl including at least one of oxygen, nitrogen or sulfur in the hetero ring, cyano, halogen, 9-oxa-10-phosphaphenathrene-10-oxide, (C6-C30)aryloxy, (C6-C30)arylsulfonyl, amino, mono- or di(C1-C30)alkylamino, mono- or di(C6-C30)arylamino, mono- or di-benzyl, mono- or di(C3-C30)cycloalkylamino, hydroxyl, nitro, (C2-C7)alkenyloxy, (C2-C7)alkynyloxy, (C2-C7)alkenylcarbonyloxy, (C2-C7)alkynylcarbonyloxy, tri(C1-C30)alkylsilyl, di(C1-C30)alkyl(C6-C30)arylsilyl, di(C6-C30)ar(C1-C30)alkylsilyl, and tri(C6-C30)arylsilyl.