Organic light emitting compound and organic light emitting device comprising the same

Patent metadata

Field	Value
Publication number	US-2016248024-A1
Application number	US-201415028181-A
Country	US
Kind code	A1
Filing date	Oct 10, 2014
Priority date	Oct 11, 2013
Publication date	Aug 25, 2016
Grant date	—

Abstract

The present invention relates to an organic light emitting compound and an organic light emitting device comprising the same, and the organic light emitting device employing the organic light emitting compound according to the present invention can be driven at a lower voltage than existing devices employing a phosphorescent host material, and has excellent power efficiency, improved light emission efficiency, and long lifespan characteristics.

First claim

1 . An organic light emitting compound represented by Formula 1:

wherein X 1 to X 8 are identical to or different from each other and are each independently N or CR o , provided that when CR o exists in plurality, the CR o groups are identical to or different from each other, Z 1 to Z 4 are each independently N or are CR 1 to CR 4 , respectively, L represents a linker and is a single bond or is selected from substituted or unsubstituted C 1 -C 60 alkylene groups, substituted or unsubstituted C 2 -C 60 alkenylene groups, substituted or unsubstituted C 2 -C 60 alkynylene groups, substituted or unsubstituted C 3 -C 60 cycloalkylene groups, substituted or unsubstituted C 2 -C 60 heterocycloalkylene groups, substituted or unsubstituted C 5 -C 60 arylene groups, and substituted or unsubstituted C 2 -C 60 heteroarylene groups, n is an integer from 1 to 3, provided that when n is equal to or greater than 2, the plurality of L groups are identical to or different from each other, R o and R 1 to R 9 are identical to or different from each other and are each independently selected from a hydrogen atom, a deuterium atom, substituted or unsubstituted C 1 -C 30 alkyl groups, substituted or unsubstituted C 6 -C 40 aryl groups, substituted or unsubstituted C 2 -C 30 heteroaryl groups, halogen atoms, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazino group, a hydrazono group, a carboxyl group or salts thereof, a sulfonic acid group or salts thereof, a phosphoric acid group or salts thereof, substituted or unsubstituted C 2 -C 60 alkenyl groups, substituted or unsubstituted C 2 -C 60 alkynyl groups, substituted or unsubstituted C 1 -C 60 alkoxy groups, substituted or unsubstituted C 3 -C 60 cycloalkyl groups, substituted or unsubstituted C 5 -C 30 cycloalkenyl groups, substituted or unsubstituted C 5 -C 60 aryloxy groups, substituted or unsubstituted C 1 -C 30 alkylthioxy groups, substituted or unsubstituted C 5 -C 30 arylthioxy groups, substituted or unsubstituted C 5 -C 60 arylthio groups, —SiR 11 R 12 R 13 , and —NR 14 R 15 , any one of R 1 to R 9 in A is linked to L, R 11 to R 15 are identical to or different from each other and are each independently selected from a hydrogen atom, a deuterium atom, substituted or unsubstituted C 1 -C 30 alkyl groups, substituted or unsubstituted C 6 -C 40 aryl groups, substituted or unsubstituted C 2 -C 30 heteroaryl groups, halogen atoms, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazino group, a hydrazono group, a carboxyl group or salts thereof, a sulfonic acid group or salts thereof, a phosphoric acid group or salts thereof, substituted or unsubstituted C 2 -C 60 alkenyl groups, substituted or unsubstituted C 2 -C 60 alkynyl groups, substituted or unsubstituted C 1 -C 60 alkoxy groups, substituted or unsubstituted C 3 -C 60 cycloalkyl groups, substituted or unsubstituted C 5 -C 30 cycloalkenyl groups, substituted or unsubstituted C 5 -C 60 aryloxy groups, substituted or unsubstituted C 1 -C 30 alkylthioxy groups, substituted or unsubstituted C 5 -C 30 arylthioxy groups, and substituted or unsubstituted C 5 -C 60 arylthio groups, with the proviso that R o , R 1 to R 9 , and substituents thereof are optionally bonded together to form a saturated or unsaturated ring, and m is an integer from 1 to 3.

2 . The organic light emitting compound according to claim 1 , wherein R 9 in A is linked to L and A is represented by

wherein Z 1 to Z 4 and R 5 to R 8 have the same meanings as R 1 to R 9 defined in Formula 1 and the asterisk (*) represents a site at which R 9 is bonded to L.

3 . The organic light emitting compound according to claim 2 , wherein A′ is selected from:

wherein Z 1 to Z 4 and R 5 to R 8 are as defined in Formula 1 and each

is selected from:

wherein each asterisk (*) represents a bonding site and each R′ has the same meaning as R 1 to R 9 defined in Formula 1.

4 . The organic light emitting compound according to claim 1 , wherein L is selected from the following structures:

wherein hydrogen or deuterium atoms are optionally bonded to the carbon atoms of the aromatic rings and R optionally replaces the nitrogen atoms, R having the same meaning as R 1 to R 9 defined in Formula 1.

5 . The organic light emitting compound according to claim 1 , wherein the compound of Formula 1 is selected from compounds represented by Formulae 2 to 8:

wherein L, X 1 to X 8 , A, and n are as defined in Formula 1.

6 . The organic light emitting compound according to claim 1 , wherein the compound of Formula 1 is selected from the following compounds 1 to 65:

Assignees

• Sfc Co Ltd

Inventors

• Shin Bong-Ki
• Park Bu-Bae
• Park Ji-Hee
• Lee Bong-Hyang
• Park Kyung-Hwa

Classifications

• C09K2211/1007

  Non-condensed systems · CPC title

• C09K11/06

  containing organic luminescent materials · CPC title

• C07D403/14

  containing three or more hetero rings · CPC title

• C09K2211/1088

  containing oxygen as the only heteroatom · CPC title

• C07D409/14

  containing three or more hetero rings · CPC title