Cyclopentaphenanthrene-based compound and organic light emitting device employing the same

1. A cyclopentaphenanthrene-based compound represented by Formula 1 below:

wherein Y is a bivalent linking group and selected from the group consisting of a substituted or unsubstituted C6-C30 arylene group and a substituted or unsubstituted C2-C30 heteroarylene group;

at least one of the Ar groups is a substituent represented by Formula 7 or 8 below, and the others, which are identical to or different from each other, are a substituted or unsubstituted C6-C30 aryl group:

wherein R 1 ′, R 2 ′, R 10 and R 11 are each independently selected from the group consisting of a hydrogen atom a halogen atom a cyano group, a hydroxyl group a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted C3-C20 cycloalkyl group, a substituted or unsubstituted C5-C30 heterocycloalkyl group, a substituted or unsubstituted C1-C20 alkoxy group, a substituted or unsubstituted C6-C30 aryl group a substituted or unsubstituted C6-C30 aralkyl group and a substituted or unsubstituted C2-C30 heteroaryl group; and

R 3 to R 9 are each independently selected from the group consisting of a hydrogen atom, a halogen atom, a cyano group, a hydroxyl group, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted C3-C20 cycloalkyl group, a substituted or unsubstituted C5-C30 heterocycloalkyl group, a substituted or unsubstituted C1-C20 alkoxy group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C6-C30 aralkyl group and a substituted or unsubstituted C2-C30 heteroaryl group;

m is 1, 2 or 3; and

Q is a bivalent group represented by one of the formulae below:

2. The cyclopentaphenanthrene-based compound of claim 1 , wherein at least one of Ar groups is a substituent represented by Formula 7, which is represented by any one of Formulae 3 to 6 below:

wherein R 10 to R 12 is selected from the group consisting of a hydrogen atom, a halogen atom, a cyano group, a hydroxyl group, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted C3-C20 cycloalkyl group, a substituted or unsubstituted C5-C30 heterocycloalkyl group, a substituted or unsubstituted C1-C20 alkoxy group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C6-C30 aralkyl group and a substituted or unsubstituted C2-C30 heteroaryl group;

A is an oxygen atom, a sulfur atom or —(CH 2 ) p—, wherein p is an integer of 1 to 5; and

R 3 to R 9 are each independently selected from the group consisting of a hydrogen atom, a halogen atom, a cyano group, a hydroxyl group, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted C3-C20 cycloalkyl group, a substituted or unsubstituted C5-C30 heterocycloalkyl group, a substituted or unsubstituted C1-C20 alkoxy group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C6-C30 aralkyl group and a substituted or unsubstituted C2-C30 heteroaryl group;

m is 1, 2 or 3; and

Q is a bivalent group represented by one of the formulae below:

3. The cyclopentaphenanthrene-based compound of claim 1 , wherein Y is a bivalent linking group represented by any one of the compounds represented by formulae below:

wherein R′ is selected from the group consisting of a hydrogen atom, a halogen atom, a cyano group, a hydroxyl group, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted C3-C20 cycloalkyl group, a substituted or unsubstituted C5-C30 heterocycloalkyl group and a substituted or unsubstituted C1-C20 alkoxy group.

4. The cyclopentaphenanthrene-based compound of claim 1 , wherein at least one of the Ar groups is a substituent represented by Formula 7 or 8, and the others, which are identical to or different from each other, are selected from the group consisting of the formulae below:

wherein R′ is selected from the group consisting of a hydrogen atom, a halogen atom, a cyano group, a hydroxyl group, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted C3-C20 cycloalkyl group, a substituted or unsubstituted C5-C30 heterocycloalkyl group and a substituted or unsubstituted C1-C20 alkoxy group.

5. The cyclopentaphenanthrene-based compound of claim 1 , being one of the compounds represented by Formulae 10 to 32, and 35 to 40 below:

6. An organic light emitting device comprising:

a first electrode;

a second electrode; and

at least one organic layer between the first electrode and the second electrode,

wherein the organic layer comprises a compound according to any one of the claims 1 , 2 , 3 , 4 , or 5 .

7. The organic light emitting device of claim 6 , wherein the organic layer is selected from the group consisting of an emitting layer, a hole injection layer and a hole transport layer.

8. The organic light emitting device of claim 6 , wherein the organic layer is a hole transport layer.

9. The organic light emitting device of claim 6 , further comprising at least one layer selected from the group consisting of an emitting layer, a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer and an electron injection layer between the first electrode and the second electrode.