Sk Materials Jnc Co., Ltd.

Kwansei Gakuin Educational Foundation

Katsuya Masuda

Takuji Hatakeyama

Motoki Yanai

Yuko Yamaga

Yohei Ono

Daisuke Baba

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

Provided is an organic electroluminescent element including a light emitting layer containing, as a dopant, at least two compounds selected from a compound group consisting of a polycyclic aromatic compound represented by the following general formula (1) and a multimer thereof: wherein the symbols are defined in the specification.

An object is to provide an azoline ring-containing compound which achieves characteristics required for an organic EL element, such as a driving voltage, a quantum efficiency, and element lifetime in a well-balanced manner, and particularly can obtain a high quantum efficiency, for example, in a case where the azoline ring-containing compound is used for the organic EL element. The above object is achieved by an azoline ring-containing compound represented by the following general formula (1).  In formula (1), &#x3c6; represents an m-valent group derived from an aromatic hydrocarbon having 6 to 40 carbon atoms or the like, Y represents &#x2014;O&#x2014;, &#x2014;S&#x2014;, or &#x3e;N&#x2014;Ar, Rto Reach represent a hydrogen atom or an alkyl having 1 to 4 carbon atoms, and L represents a phenylene group or the like.

Azoline ring-containing compound, electron transport/injection layer material containing the same, and organic electroluminescent element using the same

Growing community of inventors

Chiba, Japan

Katsuya Masuda