Organic heterocyclic compound and light-emitting diode comprising same

An organic compound, represented by the following Chemical Formula A or B:

• wherein,
• A1, A2, E, and F may be the same or different and are each independently a substituted or unsubstituted aromatic hydrocarbon ring of 6 to 50 carbon atoms or a substituted or unsubstituted heteroaromatic ring of 2 to 40 carbon atoms, wherein two adjacent carbon atoms of the aromatic ring Al and two adjacent carbon atoms of the aromatic ring A2 form a 5-membered fused ring together with a carbon atom connected to both substituents R1 and R2;
• linkers L1 and L2 may be the same or different and are each independently selected from among a direct bond, a substituted or unsubstituted alkylene of 1 to 60 carbon atoms, a substituted or unsubstituted alkenylene of 2 to 60 carbon atoms, a substituted or unsubstituted alkynylene of 2 to 60 carbon atoms, a substituted or unsubstituted cycloalkylene of 3 to 60 carbon atoms, a substituted or unsubstituted heterocycloalkylene of 2 to 60 carbon atoms, a substituted or unsubstituted arylene of 6 to 60 carbon atoms, and a substituted or unsubstituted heteroarylene of 2 to 60 carbon atoms;
• M is any one selected from among N—R3, CR4R5, SiR6R7, GeR8R9, O, S, and Se;
• Ar1 and Ar2 may be the same or different and are each independently a substituted or unsubstituted heteroaryl of 2 to 50 carbon atoms bearing at least one nitrogen atom,
• n1 and n2 are each independently an integer of 1 to 3, with the proviso that when each of them is two or greater, the corresponding respective L1's and L2's are the same or different,
• x is 1 and y is 0, or x and y are each 1,
• R1 to R9 may be the same or different and are each independently any one selected from among a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl of 1 to 30 carbon atoms, a substituted or unsubstituted aryl of 6 to 50 carbon atoms, a substituted or unsubstituted alkenyl of 2 to 30 carbon atoms, a substituted or unsubstituted alkynyl of 2 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl of 3 to 30 carbon atoms, a substituted or unsubstituted cycloalkenyl of 5 to 30 carbon atoms, a substituted or unsubstituted heteroaryl of 2 to 50 carbon atoms, a substituted or unsubstituted heterocycloalkyl of 2 to 30 carbon atoms, a substituted or unsubstituted alkoxy of 1 to 30 carbon atoms, a substituted or unsubstituted aryloxy of 6 to 30 carbon atoms, a substituted or unsubstituted alkylthioxy of 1 to 30 carbon atoms, a substituted or unsubstituted arylthioxy of 6 to 30 carbon atoms, a substituted or unsubstituted alkylamine of 1 to 30 carbon atoms, a substituted or unsubstituted arylamine of 6 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl of 1 to 30 carbon atoms, a substituted or unsubstituted arylsilyl of 6 to 30 carbon atoms, a substituted or unsubstituted alkylgermanium of 1 to 30 carbon atoms, a substituted or unsubstituted arylgermanium of 6 to 30 carbon atoms, a cyano, a nitro, and a halogen, with the proviso that R1 and R2 in Chemical Formula A are not bonded to each other, and R1 and R2 in Chemical Formula B may be bonded to each other to form a mono- or polycyclic aliphatic or aromatic ring, which may be a heterocyclic ring bearing at least one heteroatom selected from among N, O, P, Si, S, Ge, Se, and Te as a ring member;
• two adjacent carbon atoms of the A2 ring moiety of Chemical Formula A may occupy respective positions * of Structural Formula Q1 to form a fused ring, and
• two adjacent carbon atoms of the A1 ring moiety of Chemical Formula B may occupy respective positions * of structural Formula Q2 to form a fused ring, and two adjacent carbon atoms of the A2 ring moiety of Chemical Formula B may occupy respective positions * of Structural Formula Q1 to form a fused ring;
• wherein the term “substituted” in the expression “substituted or unsubstituted” used for Chemical Formulas A and B means having at least one substituent selected from the group consisting of a deuterium atom, a cyano, a halogen, a hydroxy, a nitro, an alkyl of 1 to 24 carbon atoms, a halogenated alkyl of 1 to 24 carbon atoms, an alkenyl of 2 to 24 carbon atoms, an alkynyl of 2 to 24 carbon atoms, a heteroalkyl of 1 to 24 carbon atoms, an aryl of 6 to 24 carbon atoms, an arylalkyl of 7 to 24 carbon atoms, a heteroaryl of 2 to 24 carbon atoms or a heteroarylalkyl of 2 to 24 carbon atoms, an alkoxy of 1 to 24 carbon atoms, an alkylamino of 1 to 24 carbon atoms, an arylamino of 6 to 24 carbon atoms, a heteroarylamino of 1 to 24 carbon atoms, an alkylsilyl of 1 to 24 carnon atoms, an arylsilyl of 6 to 24 carbon atoms, and an aryloxy of 6 to 24 carbon atoms.