Abstract: An organic compound having excellent electron transport property and hole blocking property as a material for a highly efficient organic EL device, and also provide a highly efficient organic EL device using the compound. This invention relates to a compound having a triazole ring structure to which a substituted pyridyl group is bonded, represented by the following general formula (1), and to an organic electroluminescence device comprising the compound: wherein Ar1 and Ar2, R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10, and m are as defined in the specification.

Abstract: 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.

Abstract: 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 CH2, or N or NH; Ar1 and Ar2 are respectively the same and each represents a substituted or unsubstituted phenylene group; R1, R2, R3, and R4 each 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.

Abstract: 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; R1 and R2 may be the same or different and represent each an arbitrary substituent; and m and o represent each an integer of 0 to 4.

Abstract: 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.

Abstract: 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 CH2, or N or NH; Ar1 and Ar2 are respectively the same and each represents a substituted or unsubstituted phenylene group; R1, R2, R3, and R4 each 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: An object of the invention is to provide an organic compound having excellent electron transport property and hole blocking property as a material for a highly efficient organic EL device, and also provide a highly efficient organic EL device using the compound.

Abstract: 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; R1 and R2 may be the same or different and represent each an arbitrary substituent; and m and o represent each an integer of 0 to 4.

Abstract: The present invention provides a carbozole derivative containing a fluorene group, represented by the following general formula (1) and an organic electroluminescence device containing the compound: wherein Cz represents a substituted or unsubstituted carbazole group; Ar represents a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensation polycyclic aromatic group; A represents a substituted or unsubstituted fluorene group; and n is an integer of from 1 to 4. According to the present invention, a compound stable in thin film state and suitable as a host compound for an emission layer of an organic electroluminescence device or as a hole transporting material can be provided. By producing an organic electroluminescence device using the compound, emission efficiency and durability of the conventional organic electroluminescence device can be remarkably improved.

Abstract: 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.

Abstract: 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.

Abstract: A fused protein comprising a polypetide containing an antibody binding site of protein A and a polypeptide of lymphotoxin, and having biological activities of lymphotoxin and an ability to bind to an antibody is disclosed. Further, a process for the production of the fused protein, as well as a DNA coding for the fused protein, a plasmid containing the DNA, and E. coli transformed with the plasmid, necessary for the above-mentioned process, are provided.