Hodogaya Chemical Co., Ltd.

Shinshu University

Nissan Chemical Industries Limited

Central Glass Company, Limited

Tosoh Corporation

Nippon Soda Co., Ltd.

Sagami Chemical Research Center

Tetsuzo Miki

Yoshio Taniguchi

Musubu Ichikawa

Norimasa Yokoyama

Shuichi Hayashi

Shigeru Kusano

Makoto Nagaoka

Chihaya Adachi

Seishi Kato

Naohiro Tarumoto

Hiroshi Osada

An object of the invention is to provide an organic compound having excellent characteristics as a material for highly efficient and highly durable organic EL devices, and also to provide a highly efficient and highly durable organic EL device. This invention relates to a compound represented by the general formula (1) having an oxadiazole ring structure bonded with an aromatic heterocycle, and to an organic electroluminescence device containing the compound: wherein Ar represents a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group; A represents a substituted or unsubstituted aromatic heterocyclic group; and n represents an integer of 1 to 3.

Compound having oxadiazole ring structure bonded with aromatic heterocyclic ring and organic electroluminescent device

This invention relates to an arylamine compound having a molecular weight of 1,500 to 6,000 represented by formula (1), and to an organic electroluminescence device having a pair of electrodes and at least one organic layer sandwiched therebetween, wherein the arylamine compound of formula (1) is used as a constituting material of the at least one organic layer: wherein X represents a single bond, CH or CH, or N or NH; Arand Arare respectively the same and each represents a substituted or unsubstituted phenylene group; R, R, R, and Reach independently represents an aryl group, wherein the aryl group may be substituted by a diarylamine group in such a manner as to form a triphenylamine partial structure, and the aryl group at the terminal may be substituted, by repetition, by a diarylamino group in such a manner as to form a triphenylamine partial structure; m represents an integer of 0 to 2; and n represents 0 or 1.

Arylamine compound and organic electroluminescence device

An object of the present invention is to provide a host compound in an emission layer, which has a high excited triplet level and completely confines triplet excitons of an phosphorescence-emitting substance. The invention relates to a compound containing an m-carbazolylphenyl group, which is represented by the following general formula (1): wherein A represents a nitrogen atom, an amino group to which a substituted or unsubstituted aromatic hydrocarbon group is bonded, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group; n represents an integer of 2 to 4; Rand Rmay be the same or different and represent each an arbitrary substituent; and m and o represent each an integer of 0 to 4.

m-carbazolylphenyl compounds

The present invention relates to a compound having an oxadiazole ring structure having a substituted pyridyl group connected thereto, represented by the following general formula (1). According to the present invention, it becomes possible to provide an organic compound having excellent characteristic of high stability in a thin film state, and the emission efficiency and durability of conventional organic EL devices can be remarkably improved.

Compound having oxadiazole ring structure substituted with pyridyl group and organic electroluminescence device

Objects of the invention are to provide a compound of a single molecular species having excellent hole injection/transport property suitable for highly efficient and highly durable organic EL device and excellent amorphousness, and provide a highly efficient and highly durable organic EL device using the compound. This invention relates to an arylamine compound having a molecular weight of 1,500 to 6,000 represented by the following general formula (1), and to an organic electroluminescence device having a pair of electrodes and at least one organic layer sandwiched therebetween, wherein the compound is used as a constituting material of the at least one organic layer: wherein X represents a single bond, CH or CH, or N or NH; Arand Arare respectively the same and each represents a substituted or unsubstituted phenylene group, biphenylene group, or terphenylene group; R, R, R, and Reach independently represents an aryl group, wherein the aryl group may be substituted by a diarylamine group in such a manner as to form a triphenylamine partial structure, and the aryl group at the terminal may be substituted, by repetition, by a diarylamino group in such a manner as to form a triphenylamine-like partial structure; m represents an integer of 0 to 2; and n represents 0 or 1.

The present invention provides an arylamine compound having a molecular weight of from 1500 to 6000 represented by the general formula (1): According to the present invention, there can be provided an arylamine compound having excellent hole injection and transporting characteristics and being capable of forming a stable thin film. By using the compound, emission efficiency and durability of conventional organic EL devices can remarkably be improved.

Arylamine compound and organic electroluminescent device

Compound having oxadiazole ring structure substituted with pyridyl group, and organic electroluminescent device

Fused protein comprising lymphotoxin

Growing community of inventors

Minato-ku, Japan

Tetsuzo Miki