Aromatic compound and organic electroluminescence device including the same

An aromatic compound represented by Formula 1:

• wherein in Formula 1,
• Ra to Rd are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 5 to 30 ring-forming carbon atoms,
• R1 to R3 are each independently represented by Formula 2, or a hydrogen atom, wherein at least one of R1 to R3 is represented by Formula 2,
• X is O or S,
• na, nc, and nd are each independently an integer of 0 to 4, and
• nb is an integer of 0 to 3:
• wherein in Formula 2,
• Y1 to Y3 are each independently CR4 or N,
• L is a direct linkage, a substituted or unsubstituted arylene group having 6 to 12 carbon atoms for forming a ring, or a substituted or unsubstituted heteroarylene group having 5 to 11 carbon atoms for forming a ring,
• R4 is a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 5 to 30 ring-forming carbon atoms,
• Ar1 and Ar2 are each independently a hydrogen atom, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 5 to 30 ring-forming carbon atoms, or represented by Formula 4, wherein at least one of Ar1 or Ar2 is a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 5 to 30 ring-forming carbon atoms, or represented by Formula 4:
• wherein in Formula 4,
• Re to Rh are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 5 to 30 ring-forming carbon atoms,
• R5 to R7 are each independently a position to be connected to Formula 2, or a hydrogen atom, wherein at least one of R5 to R7 is a position to be connected to Formula 2,
• Z4 is O or S,
• ne, ng, and nh are each independently an integer of 0 to 4, and
• nf is an integer of 0 to 3.

The aromatic compound of claim 1, wherein a moiety represented by Formula 4 is represented by Formula 4-1:

• Formula 4-1
• wherein in Formula 4,
• is a position to be connected to Formula 2,
• Z4, Re to Rh, ne to nh are the same as respectively defined in Formula 4.

An organic electroluminescence device, comprising:

• a first electrode;
• a second electrode opposite to the first electrode;
• and
• a plurality of organic layers between the first electrode and the second electrode,
• wherein at least one organic layer from among the plurality of organic layers comprises an aromatic compound represented by Formula 1:
• wherein in Formula 1,
• Ra to Rd are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 5 to 30 ring-forming carbon atoms,
• R1 to R3 are each independently represented by Formula 2, or a hydrogen atom, wherein at least one of R1 to R3 is represented by Formula 2,
• X is O or S,
• na, nc, and nd are each independently an integer of 0 to 4, and
• nb is an integer of 0 to 3:
• wherein in Formula 2,
• Y1 to Y3 are each independently CR4 or N,
• L is a direct linkage, a substituted or unsubstituted arylene group having 6 to 12 carbon atoms for forming a ring, or a substituted or unsubstituted heteroarylene group having 5 to 11 carbon atoms for forming a ring,
• R4 is a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 5 to 30 ring-forming carbon atoms,
• Ar1 and Ar2 are each independently a hydrogen atom, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 5 to 30 ring-forming carbon atoms, or represented by Formula 4, wherein at least one of Ar1 or Ar2 is a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 5 to 30 ring-forming carbon atoms, or represented by Formula 4:
• wherein in Formula 4,
• Re to Rh are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 5 to 30 ring-forming carbon atoms,
• R5 to R7 are each independently a position to be connected to Formula 2, or a hydrogen atom, wherein at least one of R5 to R7 is a position to be connected to Formula 2,
• Z4 is O or S,
• ne, ng, and nn are each independently an integer of 0 to 4, and
• nf is an integer of 0 to 3.