Toray Industries, Inc.

Other

Kazunori Sugimoto

Tsuyoshi Tominaga

Kazumasa Nagao

Seiichiro Murase

Daisuke Kitazawa

Takafumi Ogawa

Takeshi Ishigaki

Daisaku Tanaka

Takeshi Ikeda

Yohei Nakano

Koji Ueoka

Mariko Sano

Kazumana Nagao

Takeshi Toray Fibers & Textiles Res Lab Co Ltd Ishigaki

Disclosed is an organic electroluminescent element which has achieved both high luminous efficiency and low driving voltage by containing a light-emitting element material, which comprises a specific pyrene compound, in one of the layers that constitute the light-emitting element, preferably in a light-emitting layer or in an electron-transporting layer. The pyrene compound may have the following general formula: 

Light emitting device material and light emitting device

A light emitting device material containing a pyrene compound of formula (1) and a light emitting device. In formula (1), Rto Rare the same or different and are selected from hydrogen, alkyl, cycloalkyl, heterocyclic, alkenyl, cycloalkenyl, alkynyl, alkoxy, alkylthio, arylether, arylthioether, aryl, heteroaryl, halogen, carbonyl, carboxyl, oxycarbonyl, carbamoyl, amino, phosphine oxide and silyl; adjacent substituents among Rto Rmay be combined with each other to form a ring; n represents an integer of 1 to 3; X is &#x2014;O&#x2014;, &#x2014;S&#x2014; or &#x2014;NR&#x2014;; Ris selected from hydrogen, alkyl, cycloalkyl, heterocyclic, alkenyl, cycloalkenyl, alkynyl, aryl, heteroaryl or amino; Rmay be combined with Ror Rto form a ring; Y is a single bond, arylene or heteroarylene; and n substituents among Rto Rand any one of Rto Rare used for linkage with Y 

Light-emitting device material and light-emitting device

The present invention provides a light emitting device comprising at least an emissive layer existing between an anode and a cathode, which emits light by means of electric energy. The light emitting device contains a compound having a pyrromethene skeletal structure with a specific structure or a metal complex thereof and a naphthacene derivative, and thus the light emitting device has high luminance efficiency and excellent durability.

Light-emitting device

Disclosed is a light emitting device material characterized by containing a specific fluorine compound. This light emitting device material enables to obtain a light emitting device having high luminous efficiency, excellent color purity and excellent durability. Also disclosed is a light emitting device using such a light emitting device material.

The invention provides a light emitting device having a low driving voltage and excellent durability by a material for a light emitting device expressed by the general formula (1): wherein each of R, R, R, R, Rand Rmay be the same or different and is selected from hydrogen, an alkyl group, and an aryl group, A represents an n-valent aromatic hydrocarbon group, B represents an alkyl group or an aryl group, X represents carbon or nitrogen, n represents a natural number from 2 to 6, and n substituents having a phenanthroline skeleton or a benzoquinoline skeleton may be the same or different.

Material for lighting emitting device and light emitting device

The present invention is a light emitting device material characterized by containing an anthracene compound represented by the following general formula (1), and the present invention allows a light emitting device having high luminous efficiency and excellent durability.  (Rto Rare a hydrogen atom, alkyl group, cycloalkyl group, heterocyclic group or the like. At least one of the Rto Ris a substituent represented by the following general formula (2)) 

The present invention is a light-emitting device material characterized by containing a pyrene compound represented by the following general formula (1):   wherein R15 is a specific functional group; andY1 to Y4 is selected from among a nitrogen atom and a carbon atom, provided that at least one of the Y1 to Y4 is a nitrogen atom and at least one thereof is a carbon atom, and no substituents exist on the nitrogen atom in the case of the nitrogen atom. This material provides a light-emitting device having high luminous efficiency and excellent durability.

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Otsu, Japan

Kazunori Sugimoto