Kwansei Gakuin Educational Foundation

Sk Materials Jnc Co., Ltd.

Jnc Corporation

Yuko Yamaga

Takuji Hatakeyama

Kazushi Shiren

Akio Tajima

Guofang Wang

Daisuke Baba

Yasuyuki Sasada

Motoki Yanai

Yohei Ono

Katsuya Masuda

Akihide Mizutani

Hiroyuki Imai

Daisuke Inoue

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

The present invention relates to a light emitting layer material comprising: a polycyclic aromatic compound (1) in which a plurality of aromatic rings are linked by a boron atom and a oxygen atom or a nitrogen atom; and a specific anthracene-based compound (3) that achieves optimum light-emission characteristics in combination with said polycyclic aromatic compound. With this light emitting layer material having optimum light emitting characteristics, it is possible to provide an excellent organic EL element.  Ring A to ring C are an aryl ring or the like, Yis B (boron), Xand Xare &#x2014;O&#x2014; or &#x3e;N&#x2014;R (provided that at least one is &#x2014;O&#x2014;), X is a group represented by formula (3-X1), (3-X2), or (3-X3), Y is &#x2014;O&#x2014;, &#x2014;S&#x2014; or &#x3e;N&#x2014;R, Ris a hydrogen atom or an optionally substituted aryl, Arto Arare phenyl, a group represented by formula (4), or the like, and both Arand Ardo not simultaneously represent a phenyl.

Organic electroluminescent element

By using a polycyclic aromatic compound as a material for a light-emitting layer, formed by connecting a plurality of aromatic rings with a boron atom and an oxygen, sulfur, or selenium atom, which have been substituted by a specific aryl such as anthracene, an organic EL element having at least one of excellent quantum efficiency and element life can be provided.

Polycyclic aromatic compound for organic electroluminescent device

A polycyclic aromatic compound in which a plurality of aromatic rings are connected by a boron atom and an oxygen atom, a sulfur atom or a selenium atom and substituted by a specific aryl such as anthracene, is useful as a material for an organic device. By the polycyclic aromatic compound, an organic EL device having at least one of efficiency and device life can be provided.

Polycyclic aromatic compound, material for an organic device, organic electroluminescent element, display apparatus and lighting apparatus

By manufacturing an organic EL element using a material for a light emitting layer including a pyrene-based compound represented by the following formula (2) as a host material and a polycyclic aromatic compound in which a plurality of aromatic rings is linked with a boron atom and a nitrogen atom or an oxygen atom as a dopant material, an organic EL element having, for example, excellent light emission efficiency is provided.  In the above formula (2), at least one hydrogen atom in a pyrene moiety may be substituted by an aryl having 6 to 10 carbon atoms or the like. Ar represents an aryl having 14 to 40 carbon atoms or a heteroaryl having 12 to 40 carbon atoms. These groups may be substituted by an aryl having 6 to 10 carbon atoms or the like. s and p each independently represent an integer of 1 or 2. s and p do not simultaneously represent 2. One or more hydrogen atoms in a compound represented by formula (2) may be each independently substituted by a halogen atom, cyano, or a deuterium atom.

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.

Growing community of inventors

Tokyo, Japan

Yuko Yamaga