Nitto-denko Corporation

David T Sisk

Amane Mochizuki

Shijun Zheng

Sheng Li

Hironaka Fujii

Sazzadur Rahman Khan

Brett T Harding

Eugene Dantsker

Liping Ma

Qianxi Lai

Rebecca Romero

Hyunsik Chae

Jensen Cayas

Hyun Sik Chae

Ma Liping

Rebecca Bottger

This disclosure relates to compounds for use in light-emitting devices are described herein. These compounds may include a biphenyl that includes four substituents, such as benzoxazolyl, benzothiazolyl, or benzimidazolyl substituents, such as a compound represented by Formula 1. These compounds can incorporated into a nanostructure material or a plurality of nanostructures, which can be useful for light-scattering or light-extraction, for example, to increase the efficiency of light-emitting devices.

Substituted biphenyl compounds for use in light-emitting devices

Some embodiments provide a compound represented by Formula 1, wherein ET, ETand ETare optionally substituted quinolinyl or optionally substituted quinoxalinyl; and wherein R, R, and Rare independently selected from the group consisting of H, Calkyl, and Cperfluoroalkyl. Other embodiments provide an organic electron transmission element and an organic light-emitting diode device comprising a compound of Formula 1.

Electron transport material for organic emitting diodes

The present disclosure relates to an emissive construct, which can be used in various OLED applications, for example, top-emission white organic light-emitting diodes. The emissive construct can include an optional second fluorescent emissive layer having an emitter with a second T1, a first fluorescent emissive layer having an emitter with a first T1, the first T1 being greater than the second T1 value, a hole-blocking layer, and a phosphorescent emissive layer.

Top-emitting white organic light-emitting diodes having improved efficiency and stability

Light-emitting devices comprising an fluorescent emissive layer, and three different phosphorescent emissive layers are described herein.

Light-emitting devices comprising emissive layer

Polyphenylene compounds such as compounds represented by Formula 1 may be used in electronic devices such as organic light-emitting devices. For example, the compounds may be used as host materials in a light-emitting layer.

Polyphenylene host compounds

Optionally substituted ambipolar naphthalene compounds useful in light-emitting devices are described, including without limitation 9-(3-(10-(3-(1-phenyl-1H-benzo[d]imidazol-2-yl)phenyl)anthracen-9-yl)phenyl)-9H-carbazole and 9-(3-(10-(3-(1-phenyl-1H-benzo[d]imidazol-2-yl)phenyl)anthracen-9-yl)phenyl)-9H-carbazole.

Compounds for use in light emitting devices

Included herein is the compound: and related compounds, and light-emitting devices comprising the same.

Compounds for use in light-emitting devices

Some substituted biaryl ring systems may be useful in light-emitting devices, such as those comprising a light-emitting diode. For example, substituted bipyridinyl or substituted phenylpyridinyl may be useful in these devices. The substituted biaryl ring system may have at least two different substituents, including one on each ring on the biaryl system. The first substituent may include optionally substituted carbazolyl, optionally substituted diphenylamine, optionally substituted diphenylaminophenyl, and optionally substituted carbazolylphenyl. The second substituent may include optionally substituted benzimidazol-2-yl, optionally substituted benzoxazol-2-yl, and an optionally substituted benzothiazol-2-yl.

Substituted biaryl compounds for light-emitting devices

Optionally substituted bipyridine compounds, optionally substituted phenylbipyridine compounds, or optionally substituted bis-phenylbipyridine compounds may be useful in light-emitting devices. Some examples include, but are not limited to, optionally substituted 4-(5-(6-(4-(diphenylamino)phenyl)pyridin-3-yl)pyridin-2-yl)-N,N-diphenylbenzenamine, optionally substituted 9-(4-(5-(6-(4-(9H-carbazol-9-yl)phenyl)pyridin-3-yl)pyridin-2-yl)phenyl)-9H-carbazole, optionally substituted 4-(5-(6-(benzo[d]thiazol-2-yl)pyridin-3-yl)pyridin-2-yl)-N,N-diphenylbenzenamine, optionally substituted 4-(5-(6-(benzo[d]oxazol-2-yl)pyridin-3-yl)pyridin-2-yl)-N,N-diphenylbenzenamine, optionally substituted N,N-diphenyl-4-(5-(6-(1-phenyl-1H-benzo[d]imidazol-2-yl)pyridin-3-yl)pyridin-2-yl)benzenamine, optionally substituted 4-(5-(6-(4-(9H-carbazol-9-yl)phenyl)pyridin-3-yl)pyridin-2-yl)-N,N-diphenylbenzenamine, optionally substituted 2-(5-(6-(benzo[d]thiazol-2-yl)pyridin-3-yl)pyridin-2-yl)benzo[d]thiazole, optionally substituted 2-(5-(6-(benzo[d]thiazol-2-yl)pyridin-3-yl)pyridin-2-yl)benzo[d]oxazole, optionally substituted 9-(4-(5-(6-(benzo[d]thiazol-2-yl)pyridin-3-yl)pyridin-2-yl)phenyl)-9H-carbazole, optionally substituted 9-(4-(5-(6-(benzo[d]oxazol-2-yl)pyridin-3-yl)pyridin-2-yl)phenyl)-9H-carbazole, optionally substituted 9-(4-(6'-(1-phenyl-1H-benzo[d]imidazol-2-yl)-3,3&#x2032;-bipyridin-6-yl)phenyl)-9H-carbazole, and 6,6&#x2032;-bis(9-phenyl-9H-carbazol-3-yl)-3,3&#x2032;-bipyridine.

Substituted bipyridines for use in organic light-emitting devices

Polyphenylene compounds such as compounds represented by Formulas 1-28 may be used in electronic devices such as organic light-emitting devices. For example, the compounds may be used as host material in an emissive layer.

Organic light emitting host materials

Some embodiments provide a compound represented by Formula 1: wherein R, R, R, R, R, R, Rand Rare independently H, C-Calkyl, or Cperfluoroalkyl; HT is optionally substituted carbazoyl, optionally substituted phenylcarbazolyl, optionally substituted (phenylcarbazolyl)phenyl, optionally substituted phenylnaphthylamine, or optionally substituted diphenylamine; and ET optionally substituted benzimidazol-2-yl, optionally substituted benzothiazol-2-yl, optionally substituted benzoxazol-2-yl, optionally substituted 3,3'-bipyridin-5-yl, optionally substituted quinolin-8-yl, optionally substituted quinolin-5-yl, or optionally substituted quinoxalin-5-yl. Other embodiments provide an organic light-emitting diode device comprising a compound of Formula 1.

Bipolar hosts for light emitting devices

Compounds useful in porous films for light extraction and/or light scattering in electronic devices, such as light-emitting devices, are described herein. These compounds may be represented by Formula 1, as described herein.Rg-Rg-Rg-Rg-Rg&#x2003;&#x2003;(Formula 1)

Compounds for porous films in light-emitting devices

Light-emitting devices are described herein.

Light-emitting devices comprising nanostructures

Polyphenylene compounds such as compounds represented by Formula I may be used in electronic devices such as organic light-emitting devices. For example, the compounds may be used as host materials in a light-emitting layer.

Optionally substituted bispyridinylbenzene compounds useful in light-emitting devices include, but are not limited to, 1,3-bis(5-(9H-carbazol-9-yl)pyridin-3-yl)benzene and 9,9'-(5,5&#x2032;-(5-methyl-1,3-phenylene)bis(pyridine-5,3-diyl))bis(9H-carbazole).

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San Diego, CA, United States of America

David T Sisk