Chisso Corporation

Kwansei Gakuin Educational Foundation

Chisso Petrochemical Corporation

Sk Materials Jnc Co., Ltd.

Jnc Corporation

Other

Motoki Yanai

Takuji Hatakeyama

Shuichi Goto

Yasuhiro Kubo

Yasuhiro Kondo

Keiichi Nakamoto

Etsuo Nakagawa

Yasuyuki Sasada

Toshiaki Ikuta

Soichiro Nakatsuka

Katsuya Masuda

Hajime Gotoh

Masayuki Saito

Ryushi Shundo

Yoshiharu Hirai

Kazuhiko Saigusa

Takashi Hiraoka

Yuko Yamaga

Hiroaki Kawashukuda

Daisuke Baba

Kohei Matsui

Yusuke Watanabe

The objective of the invention is to provide a polycyclic aromatic compound in which solubility to a solvent, film formability, wet coatability, thermal stability, and in-plane orientation are improved. This objective is achieved by alight emission layer-forming composition comprising: as a first component, at least one type of dopant material selected from the group consisting of polycyclic aromatic compounds represented by general formula (A) and polycyclic aromatic oligomer compounds including a plurality of structures represented by general formula (A); as a second component, a specific low-molecular-weight host material; and, as a third component, at least one type of organic solvent. In formula (A), ring A, ring B, and ring C each independently represent an aryl ring or a hetero aryl ring, Yis B, and Xand Xeach independently represent O or N&#x2014;R wherein at least one of Xand Xis N&#x2014;R.

Polycyclic aromatic compound and light emission layer-forming composition

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

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.

The present invention addresses the problem of providing a polycyclic aromatic compound which has improved solubility in solvents, film formability, wet coatability and in-plane orientation. The above-described problem is solved by a composition for forming a light emitting layer, which contains, as a first component, at least one compound selected from the group consisting of compounds represented by general formula (A-1) and compounds represented by general formula (A-2), as a second component, at least one compound that has a triplet energy (E) of 1.8-3.0 eV, and as a third component, at least one organic solvent.  In the formulae, R represents a hydrogen atom, an aryl group, a heteroaryl group, a diarylamino group, a diheteroarylamino group or an aryl heteroarylamino group.

Polycyclic aromatic compound and light emitting layer-forming composition

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.

The objective of the invention is to provide a polycyclic aromatic compound in which solubility to a solvent, film formability, wet coatability, thermal stability, and in-plane orientation are improved. This objective is achieved by a light emission layer-forming composition comprising: as a first component, at least one type of dopant material selected from the group consisting of polycyclic aromatic compounds represented by general formula (A) and polycyclic aromatic oligomer compounds including a plurality of structures represented by general formula (A); as a second component, a specific low-molecular-weight host material; and, as a third component, at least one type of organic solvent. In formula (A), ring A, ring B, and ring C each independently represent an aryl ring or a hetero aryl ring, Yis B, and Xand Xeach independently represent O or N&#x2014;R wherein at least one of Xand Xis N&#x2014;R. 

A liquid crystal composition having a negative dielectric anisotropy that includes three components, wherein the first component is at least one compound selected from the group of compounds represented by Formulas (1-1) to (1-6), the second component is at least one compound selected from the group of compounds represented by Formula (2), and the third component is at least one compound selected from the group of compounds represented by Formulas (3-1) and (3-2): wherein, for example, R, R, R, Rand Rare alkyl having 1 to 12 carbons; Xand Xare fluorine; Z, Z, Z, Z, Zand Zare a single bond; and ring A, ring B, ring C and ring D are 1,4-cyclohexylene or 1,4-phenylene.

Liquid crystal composition and liquid crystal display device

A liquid crystal composition having a nematic phase that includes three components, wherein the first component is at least one compound selected from the group of compounds represented by formula (1), the second component is at least one compound selected from the group of compounds represented by formulas (2-1) to (2-3), and the third component is at least one compound selected from the group of compounds represented by formula (3): wherein R, Rand Rare each independently alkyl having 1 to 12 carbons or alkenyl having 2 to 12 carbons; Ris fluorine, alkyl having 1 to 12 carbons or alkenyl having 2 to 12 carbons; Ris fluorine, chlorine, alkyl having 1 to 12 carbons or alkenyl having 2 to 12 carbons; Ris alkenyl having 2 to 12 carbons; Yis fluorine, chlorine or trifluoromethoxy; X, X, Xand Xare each independently hydrogen or fluorine; and one of Xand Xis fluorine, and the other is hydrogen.

A liquid crystal composition having a nematic phase that includes two components, wherein the first component is at least one compound selected from the group of compounds represented by formula (1), and the second component is at least one compound selected from the group of compounds having a group represented by formula (2) as a partial structure: wherein Rand Rare each independently hydrogen, fluorine, alkyl having 1 to 12 carbons, alkenyl having 2 to 12 carbons or alkoxy having 1 to 12 carbons; Ris hydrogen, alkyl having 1 to 12 carbons or alkoxy having 1 to 12 carbons; R, R, Rand Rare each independently alkyl having 1 to 12 carbons; ring A and ring B are each independently 1,4-cyclohexylene, 1,4-phenylene, 3-fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene; Zand Zare each independently a single bond or ethylene; and n and m are each independently 0, 1 or 2, provided that the sum of n and m is 1, 2, 3 or 4.

A liquid crystal composition having a nematic phase that includes three components, wherein the first component is at least one compound selected from the group of compounds represented by Formula (1), the second component is at least one compound selected from the group of compounds represented by Formulas (2-1) to (2-3), and the third component is at least one compound selected from the group of compounds represented by Formula (3): wherein, for example, R, R, R, R, R, R, Rand Rare alkyl having 1 to 12 carbons; Yis fluorine, &#x2014;OCFor &#x2014;OCHF; and X, X, X, X, Xand Xare each independently hydrogen or fluorine, provided that at least one of X, Xand Xis fluorine.

A liquid crystal composition having a nematic phase and containing at least one compound selected from a group of compounds represented by formula (1) as a first component and at least one compound selected from a group of compounds represented by formula (2-1) or (2-2) as a second component: wherein Ris alkyl or alkenyl; Rand Rare independently; Zand Zare independently a single bond or ethylene; Yis fluorine or chlorine; and Xand Xare independently hydrogen or fluorine.

Growing community of inventors

Chiba, Japan

Motoki Yanai