Canon Kabushiki Kaisha

Samsung Electronics Co., Ltd.

Dow Corning Asia Limited

Akihito Saitoh

Jun Kamatani

Naoki Yamada

Akihiro Senoo

Keiji Okinaka

Takayuki Horiuchi

Yosuke Nishide

Kengo Kishino

Hirokazu Miyashita

Masashi Hashimoto

Kazunori Ueno

Tetsuya Kosuge

Satoshi Igawa

Shinjiro Okada

Masanori Muratsubaki

Chika Negishi

Shigemoto Abe

Takao Takiguchi

Masataka Yashima

Koichi Suzuki

Jian Chen

Hiroki Ohrui

Mizuho Hiraoka

Hironobu Iwawaki

Hiroyuki Tomono

Minako Nakasu

Kei Tagami

Hiroshi Tanabe

Michiyo Sekiya

Kunihiko Sekido

Masashi Nishi

Kenichi Ikari

Isao Kawata

Maki Okajima

Takayuki Ito

Takeshi Sekiguchi

Nobutaka Mizuno

Norifumi Kajimoto

Ryuji Ishii

Koichi Ishige

Tetsuo Takahashi

Tadashi Okamoto

Yoichi Osato

Tatsundo Kawai

Yota Ito

Taiki Watanabe

Masanori Seki

Tomona Yamaguchi

Xiao-Chang Charles Li

Terunobu Saitoh

Yuto Ito

Maki Itoh

Ryoji Yashiro

Akihito Sakakibara

Chika Nishi

Daisaku Tanaka

Tetsuyuki Michino

The compound having a high refractive index characteristic and a high transmittance is a (meth)acrylate compound represented by the following general formula (1): in the general formula (1), X represents a phenylene group, Zto Zare selected from the group consisting of a phenyl group, a heteroaryl group, a phenylene group, a heteroarylene group, a phenylalkylene group having an alkylene group having 1 or more to 4 or less carbon atoms, and a heteroaralkylene group having an alkylene group having 1 or more to 4 or less carbon atoms, Pto Pare selected from the group consisting of an acryloyloxy group and a methacryloyloxy group, A is selected from the group consisting of an aryl group, a heteroaryl group, an arylene group, and a heteroarylene group, and 'm' and “n” each represent 0 or 1, provided that when the “m” represents 0, the “n” represents 0.

(Meth)acrylate compound

An organic light emitting element which realizes a high efficiency and long-life light emission is provided. An organic compound represented by the general formula [1] described in Claimis provided. In the general formula [1], Rto Rare each independently selected from a hydrogen atom, a substituted or unsubstituted aryl group, and a substituted or unsubstituted heterocyclic group. However, at least one of Rto Rrepresents the aryl group or the heterocyclic group. The aryl group represents a phenyl group, a naphthyl group, a phenanthrenyl group, a fluorenyl group, a triphenylenyl group, or a chrysenyl group. The heterocyclic group represents a dibenzofuranyl group or a dibenzothienyl group.

Triphenyleno-benzohuran compound and organic light emitting element including the same

The present invention provides a novel iridium complex and an organic light-emitting device including the novel iridium complex. The novel iridium complex includes three ligands, and two of them have a phenyl-naphtho[2,1-f]isoquinoline skeleton. The present invention also provides a display apparatus including the organic light-emitting device and an electrophotographic image-forming apparatus including a light source including the organic light-emitting device and including a photosensitive member.

Iridium complex and organic light-emitting device including the same

Provided is an organic light-emitting element having high luminous efficiency and a long lifetime. The organic light-emitting element includes a pair of electrodes and an organic compound layer placed between the pair of electrodes, in which the organic compound layer includes an iridium complex having a benzo[f]isoquinoline of a specific structure as a ligand and a metal complex compound of a specific structure.

Organic light-emitting element and display apparatus

A method for producing a carboxylic acid anhydride includes heating a composition containing a specific compound in a solvent to yield the carboxylic acid anhydride. The solvent is an aprotic polar solvent having a boiling point of 50&#xb0; C. or more.

Method for producing carboxylic acid anhydride, method for producing carboxylic imide, and method for manufacturing electrophotographic photosensitive member

Provided is an organic light-emitting element improved in luminous efficiency and lifetime. The organic light-emitting element includes a pair of electrodes and an organic compound layer placed between the pair of electrodes, in which the organic compound layer includes an iridium complex having a benzo[f]isoquinoline of a specific structure as a ligand and a heterocycle-containing compound of a specific structure.

Organic light-emitting element

Provided is an organic light-emitting device improved in emission efficiency and lifetime. The organic light-emitting device includes a pair of electrodes and an organic compound layer disposed between the pair of electrodes, in which: the organic compound layer includes a benzo[f]isoquinoline iridium complex of a specific structure and a hydrocarbon compound of a specific structure; and the hydrocarbon compound is a compound formed only of an SPcarbon atom and a hydrogen atom.

Organic light-emitting device and display apparatus

Provided is an organic light-emitting element having high light-emitting efficiency and a long element lifetime, the organic light-emitting element including an anode, a cathode, and an organic compound layer placed between the anode and the cathode, in which: the organic compound layer includes an emission layer; the emission layer includes a host and a guest; the host is an aromatic hydrocarbon compound; the guest is an iridium complex of a specific structure; and a content of the host is 50 wt % or more with reference to the total amount of the constituent materials for the emission layer.

Organometallic complex and organic light-emitting element using the complex

Provided is an organic light-emitting device capable of outputting light with high efficiency and high luminance. The organic light-emitting device includes an anode, a cathode, an emission layer placed between the anode and the cathode, and an organic compound layer placed between the anode and the emission layer, in which the organic compound layer contains the following compound A and compound B: [Compound A] an organic compound free of a nitrogen atom and a metal atom, the compound having SPcarbon atoms and SPcarbon atoms, and having a ratio of the number of the SPcarbon atoms to the number of the SPcarbon atoms of 40% or more; and [Compound B] a compound having a tertiary amine structure.

Organic compound and organic light-emitting device

Provided is an organic light-emitting element having high light-emitting efficiency and a long element lifetime. Specifically, provided is an organic light-emitting element, including: an anode; a cathode; and an organic compound layer placed between the anode and the cathode, in which: the organic compound layer includes an emission layer; the emission layer includes at least a host and a guest; the guest is an iridium complex of a specific structure; the host is a heterocycle-containing compound; and a content of the host is 50 wt % or more with reference to a total amount of constituent materials for the emission layer.

The present invention provides an electrophotographic photosensitive member that allows positive ghost to be reduced even in repeated use. The electrophotographic photosensitive member of the present invention is an electrophotographic photosensitive member wherein an undercoat layer contains a polymerization product of a composition including a compound represented by the following formula (1). 

Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

Provided are an electrophotographic photosensitive member comprising: a support, an undercoat layer formed on the support, and a photosensitive layer formed on the undercoat layer, on which the undercoat layer contains one of a compound represented by the formula (1) and a polymer of a composition containing the compound represented by the formula (1). 

Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

A novel organic compound having high stability is provided. The organic compound is represented by Formula (1) described in claim In Formula (1), Rand Reach independently selected from a hydrogen atom, Substituent group A, and Substituent group B shown in claim, wherein at least one of Rand Ris selected from Substituent group A or Substituent group B; and Rand Rof a substituent belonging to Substituent group A are each independently selected from Substituent group B.

Organic compound and organic light-emitting device and display apparatus having the same

Provided is an organic light emitting element having high light emitting efficiency. The organic light emitting element includes: an anode; a cathode; an emission layer placed between the anode and the cathode; and a hole transport layer formed between the anode and the emission layer, in which the hole transport layer contains a siloxane compound and a compound having a tertiary arylamine structure; and number of SPcarbon atoms in the hole transport layer is ten times or less number of silicon atoms in the hole transport layer.

Silsesquioxane compound, organic light emitting element, display apparatus, image information processing apparatus, and image forming apparatus

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Gotemba, Japan

Akihito Saitoh