Compound and organic light emitting device comprising the same
Provided is a novel compound of Chemical Formula 1: wherein: X 1 to X 3 are each independently CH or N, provided that at least two of X 1 to X 3 are N, Y 1 and Y 2 are each independently O or S, L is a single bond; a substituted or unsubstituted C 6-60 arylene; a substituted or unsubstituted C 2-60 heteroarylene containing one or more selected from the group consisting of N, O, and S, Ar 1 is a C 6-60 aryl substituted with at least one deuterium, and the other substituent are as defined in the specification; and an organic light emitting device including the same. The compound of Chemical Formula 1 can be used as a material of an organic material layer of an organic light emitting device, and can improve efficiency, achieve a low driving voltage, and/or improve lifetime characteristics in the organic light emitting device.
1. A compound of the following Chemical Formula 1:
wherein, in Chemical Formula 1,
X 1 to X 3 are each independently CH or N, provided that at least two of X 1 to X 3 are N,
Y 1 and Y 2 are each independently O or S,
L is a single bond,
Ar 1 is a phenyl substituted with at least one deuterium,
each R 1 is independently hydrogen; deuterium; a halogen; cyano; nitro; amino; a substituted or unsubstituted C 1-60 alkyl; a substituted or unsubstituted C 3-60 cycloalkyl; a substituted or unsubstituted C 2-60 alkenyl; a substituted or unsubstituted C 6-60 aryl; or a substituted or unsubstituted C 2-60 heteroaryl containing any one or more heteroatoms selected from the group consisting of N, O and S, or two adjacent groups of R 1 are linked together to form a C 6-60 aromatic ring or a C 2-60 heteroaromatic ring containing one or more heteroatoms selected from the group consisting of N, O, and S, and
n is an integer of 0 to 4.
2. The compound according to claim 1 , wherein Chemical Formula 1 is any one of the following Chemical Formulas 2 to 5:
wherein, in Chemical Formulas 2 to 5,
X 1 to X 3 , Y 1 , Y 2 , L, Ar 1 , R 1 , and n are the same as those defined in claim 1 .
3. The compound according to claim 1 , wherein X 1 to X 3 all are N.
4. The compound according to claim 1 , wherein Ar 1 is phenyl substituted with five deuteriums.
5. The compound according to claim 1 , wherein each R 1 is independently hydrogen or phenyl, or two adjacent groups of R 1 are linked together to form
6. The compound according to claim 1 , wherein n is an integer of 0 to 2.
7. The compound according to claim 1 , wherein Chemical Formula 1 is either one of the following Chemical Formula 1-1 or Chemical Formula 1-2:
wherein, in Chemical Formula 1-1 or Chemical Formula 1-2,
X 1 to X 3 , Y 1 , Y 2 , L, Ar 1 , and R 1 are the same as those defined in claim 1 .
8. The compound according to claim 1 , wherein the compound of Chemical Formula 1 is any one selected from the group consisting of the following:
9. An organic light emitting device comprising:
a first electrode;
a second electrode provided to face the first electrode; and
one or more organic material layers provided between the first electrode and the second electrode, wherein one or more one layers of the organic material layers comprise the compound according to claim 1 .