Sk Materials Jnc Co., Ltd.

Kwansei Gakuin Educational Foundation

Daisuke Baba

Takuji Hatakeyama

Yuko Yamaga

Akio Tajima

Yasuyuki Sasada

Motoki Yanai

Kazushi Shiren

Yohei Ono

Toshiaki Ikuta

Katsuya Masuda

Akihide Mizutani

Kohei Matsui

Yusuke Watanabe

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

By providing a novel polycyclic aromatic compound in which a plurality of aromatic rings is linked via a nitrogen atom, a boron 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

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

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.

Organic electroluminescent element

Growing community of inventors

Chiba, Japan

Daisuke Baba