Chisso Corporation

Jnc Corporation

Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo

Kwansei Gakuin Educational Foundation

Sk Materials Jnc Co., Ltd.

Toshihiro Koike

Manabu Uchida

Kenji Furukawa

Takenori Izumizawa

Takuji Hatakeyama

Takaharu Nakano

Shigehiro Yamaguchi

Makoto Satsuki

Akiko Kageyama

Yohei Ono

Guofang Wang

Ayashi Noguchi

Makoto Fujiwara

Akihide Mizutani

Kouhei Tamao

With a light-emission-layer material comprising: a novel polycyclic aromatic compound (1) or a multimer thereof in which a plurality of aromatic rings are linked by a boron atom and a nitrogen atom; and a specific anthracene-based compound (3) that achieves optimum light-emission characteristics in combination with said polycyclic aromatic compound or a multimer thereof, it is possible to provide an organic EL element having optimum light-emission characteristics. Ring A to ring C are an aryl ring or the like, Yrepresents B, Xand Xrepresent N&#x2014;R, R of the N&#x2014;R is an aryl or the like, and Arand Arare a hydrogen atom, a phenyl, a group represented by formula (4), or the like.

Organic electroluminescent element

This organic electroluminescent element is manufactured by using an anthracene derivative having a pyridyl aryl group substituted with an alkyl represented by formula (1) as an electron transport material, and satisfies characteristics such as the following in an adequate and well-balanced manner: improves the external quantum efficiency of the light-emitting element, which is generally required by the electron transport material; reduces the drive voltage of the light-emitting element; and increases the life of the element. (In formula (1), Ar is a divalent or trivalent benzene or naphthalene; R is hydrogen or an alkyl with a carbon number of 1 to 6, but all of the Rs never simultaneously form hydrogen; and Rto Rare, individually, hydrogen, an alkyl with a carbon number of 1 to 6, a cycloalkyl with a carbon number of 3 to 6, or an aryl with a carbon number of 6 to 20.) 

Anthracene derivative and organic electroluminescent element using the same

Disclosed are benzofluorene compounds of formula (1) exhibiting excellent performance when applied to an organic electroluminescent device, wherein Arand Arare aryl which may be substituted; Rand Reach are independently hydrogen, alkyl which may be substituted, cycloalkyl which may be substituted or aryl which may be substituted, and at least one of Rand Ris aryl which may be substituted; and the substituents in Ar, Ar, Rand Reach are independently selected from the group consisting of alkyl having 1 to 24 carbon atoms, cycloalkyl having 3 to 12 carbon atoms and aryl having 6 to 30 carbon atoms.

Benzofluorene compound, emission materials and organic electroluminescent device

Provided are an organic electroluminescent device having better performances in luminous efficiency, device life and driving voltage, a display unit equipped with the same and a lighting instrument equipped with the same. The organic electroluminescent device comprises an electron transport layer containing a specific arylamine-substituted coumarin compound.

Coumarin compound, material for light emitting device and organic electroluminescent device

Organic electroluminescent device

Diaminonaphthalene derivative and organic electroluminescent device using the same

Silole derivatives and organic electroluminescent element containing the same

Growing community of inventors

Yokohama, Japan

Toshihiro Koike