Kwansei Gakuin Educational Foundation

Sk Materials Jnc Co., Ltd.

Jnc Corporation

Chisso Corporation

Guofang Wang

Takuji Hatakeyama

Yasuyuki Sasada

Manabu Uchida

Kazushi Shiren

Yuko Yamaga

Kenji Furukawa

Takaharu Nakano

Keiji Okada

Yukihiro Fujita

Akiko Kageyama

Toshihiro Koike

Yohei Ono

Masatoshi Kozaki

A polycyclic aromatic compound represented by general formula (1) described below and having a bulky substituent in a molecule is used as a material for an organic device, whereby, for example, an organic EL device excellent in quantum efficiency can be provided. In particular, concentration quenching can be suppressed even if a use concentration is comparatively high, and therefore the present art is advantageous in a device production process. In formula (1) described above, R, R, Rto R, Rto Rand Rto Rare independently hydrogen, aryl or the like, Xis &#x2014;O&#x2014; or &#x3e;N&#x2014;R (R is aryl or the like), Zand Zare a bulky substituent such as aryl, and at least one hydrogen in the compound represented by formula (1) may be replaced by halogen or deuterium.

Material for organic device and organic electroluminescent device using the same

To provide an organic electroluminescent device in which energy efficiency is improved. An organic electroluminescent device includes a pair of electrode layers formed of an anode layer and a cathode layer, and a luminescent layer arranged between the pair of electrode layers, in which the luminescent layer includes a host material and a dopant material, and the dopant material is an anthracene-based compound represented by formula (1), and the luminescent layer further includes a polycyclic aromatic compound represented by formula (2) or a multimer of a polycyclic aromatic compound having a plurality of structures represented by formula (2).

Organic electroluminescent device

By providing a novel polycyclic aromatic amino compound having an amino substituent and having a plurality of aromatic rings linked via a boron atom, an oxygen atom, or the like, for example, as in the following formula, a selection range of a material for an organic EL element is widened. In addition, by using the novel polycyclic aromatic amino compound as a material for an organic electroluminescent element, an excellent organic EL element is provided 

Polycyclic aromatic amino compound

An object is to provide a novel polycyclic aromatic compound and an organic electroluminescent element using the same. By providing a novel polycyclic aromatic compound having a diarylamino group and having a plurality of aromatic rings linked to each other via a boron atom, an oxygen atom, or the like, options of a material for an organic EL element are increased. In addition, by using the novel polycyclic aromatic compound as a material for an organic electroluminescent element, an excellent organic EL element is provided.

Polycyclic aromatic compound

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

A charge transporting material, a light emitting material and an organic electroluminescent device having high efficiency using a specified diazapentacene derivative represented by the following general formula (1):(in the general formula (1), Rto Reach represents independently a hydrogen atom, a halogen atom, an alkyl group of 1 to 6 carbon atoms, an alkoxy group, a substituted or not-substituted amino group, an aryl group or a heterocyclic group, in which the substituted or not-substituted aryl group or heterocyclic group, when they are adjacent with each other, may be of a structure condensed to each other, Xand Xeach represents independently an oxygen atom or a sulfur atom, and Yand Yeach represents independently a substituted or not-substituted alkyl group of 1 to 6 carbon atoms, an aryl group or a heterocyclic group).

Charge-transporting material containing diazapentacene derivative, luminescent material, and organic electroluminescent element employing these

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Chiba, Japan

Guofang Wang