Sumitomo Chemical Company, Limited

Ono Pharmaceutical Co., Ltd.

Cambridge Display Technology Limited

Tomoyasu Yoshida

Daisuke Fukushima

Ryuji Matsumoto

Toshiaki Sasada

Mio Shiratori

Hiroaki Hibino

Martin Humphries

Hidenori Hanaoka

Jonathan Nigel Pillow

Norihiko Hirata

Kazunori Iwakura

Yoshihiro Kawada

Makoto Anryu

Ruth Pegington

Sophie Barbara Heidenhain

Yasunobu Miyamoto

Susumu Ohtsuka

Ken Sakakibara

Junko Kudo

Itsuo Okumoto

Takashi Kuragano

Shota Moriwaki

Philip Stackhouse

Youichi Inada

Yuki Hiroi

A light emitting device having an anode, a cathode, a first organic layer and a second organic layer disposed between the anode and the cathode is provided. The first organic layer is a layer containing a light emitting material represented by the formula (T) and the second organic layer is a layer containing a crosslinked body of a polymer compound containing a crosslink constitutional unit wherein the variable groups are as defined in the specification: 

Light emitting device

A light emitting device having an anode, a cathode, a first organic layer disposed between the anode and the cathode and a second organic layer disposed between the anode and the cathode is provided. The first organic layer is a layer containing a compound (T) in which the absolute value of the difference between the energy level at the lowest triplet excited state and the energy level at the lowest singlet excited state is 0.5 eV or less and not containing a phosphorescent metal complex. The second organic layer is a layer containing a crosslinked body of a polymer compound containing a crosslink constitutional unit and the energy level at the lowest triplet excited state of the polymer compound is 2.25 eV or more.

Light emitting device and composition useful for production of same light emitting device

A polymer compound which is useful for producing a light emitting device having excellent luminance life is described. The polymer compound contains a constitutional unit having a residue of a compound represented by the formula (1) and a constitutional unit having no residue of a compound represented by the formula (1): In formula (1), Ring A, Ring B and Ring C represent an aromatic hydrocarbon ring, X represents a boron atom, Y, Yand Yrepresent N-Ry, a sulfur atom or a selenium atom, Ry represents a hydrogen atom, an aryl group, a monovalent heterocyclic group or an alkyl group, and n3 is 0 or 1. When n3 is 0, &#x2014;Y&#x2014; is absent.

Polymer compound and light emitting device using the same

A polymer compound having a constitutional unit represented by formula (1A) or formula (1B) and a constitutional unit represented by formula (2A) or formula (2B) is provided, wherein each of Xand Xis a crosslinkable group; and R, R, Arto Ar, L, Ar, m1 to m6, R, R, Arto Ar, Ar, L, Ar, n1 to n6, and Ln are as defined in the specification. The polymer compound is excellent in crosslinkability and hole transportability. 

Polymer compound and light-emitting element using same

A copolymer comprising a repeat unit of Formula (I) and at least one further repeat unit: Formula (I) wherein: wherein: Arand Arare each independently selected from aryl and heteroaryl, each of which is independently unsubstituted or substituted with one or more substituents; each R is independently a substituent; each n is independently 0, 1 or 2; each m is independently 0, 1, 2 or 3, and at least one of the repeat units of the polymer is a partially conjugating repeat unit. 

Polymer and device

A polymer compound having a constitutional unit represented by the following formula (1): 

Polymer compound and light-emitting device using same

A polymer compound is provided having a constitutional unit represented by the following formula (1): wherein: Rand Rrepresent an alkyl group, an aryl group, a mono-valent aromatic heterocyclic group, an alkoxy group or an aryloxy group, and Arrepresents an arylene group or a di-valent condensed polycyclic aromatic heterocyclic group.

Polymer compound and light-emitting element using the same

A polymer compound comprising a constitutional unit having a group represented by the formula (1): wherein Ring Aand Ring Rrepresent an aromatic hydrocarbon ring or a heterocyclic ring and these rings each optionally have a substituent, nA represents an integer of 0 to 5, nB represents an integer of 1 to 5, Land Lrepresent an alkylene group, a cycloalkylene group, an arylene group, a divalent heterocyclic ring group, a group represented by &#x2014;NR'&#x2014;, an oxygen atom or a sulfur atom, and R&#x2032; represents a hydrogen atom, an alkyl group or the like, and Qrepresents a crosslinkable group.

A polymer compound comprising a constitutional unit represented by the formula (1):  

Fluoranthene polymer compound

Provided are a useful polymer compound excellent in hole transportability, and a composition, an organic film, an insolubilized organic film, a light-emitting device, a planar light source, and a display device including the polymer compound. The polymer compound comprises a constitutional unit represented by Formula (1) in an amount of 51% by mol or more with respect to the total amount of all constitutional units and at least one of a constitutional unit represented by Formula (2) and a constitutional unit represented by Formula (3): 

Polymer compound, composition, and light-emitting device using the same

The present invention provides a method for producing a compound represented by the formula (3): wherein n is an integer of 1 to 6, characterized by the steps of hydrolyzing a solution containing an ester compound represented by the formula (1): wherein R is a lower alkyl group and n is an integer of 1 to 6, and a compound represented by the formula (2): wherein R is as defined above, adjusting the pH of the resulting solution to pH 4 to 8, and then subjecting to phase separation to obtain an organic layer containing the carboxylic acid of formula (3).

Method for producing carboxylic acid compound

A process for producing a dicarboxylic acid compound represented by the formula (4): wherein Rand Rare the same or different and each represents lower alkyl and the wavy line indicates that this compound is the E- or Z-isomer or a mixture of them, characterized by reacting a compound represented by the formula (2): wherein R, Rand the wavy line have the same meanings as the above, and one of Xand Xrepresents hydrogen and the other represents halogen, with nitrophenol represented by the formula (3): in the presence of a base; a process for producing a nitrochromone compound represented by the formula (5): wherein Rhas the same meaning as the above, characterized by reacting the dicarboxylic acid compound or carboxylic acid thereof with an acid; a process for producing an aminochromone compound which comprises reducing the nitrochromone compound; and a process for producing an amidochromone compound which comprises acylating the aminochromone compound are provided.

Growing community of inventors

Tokyo, Japan

Tomoyasu Yoshida