Using a compound that contains a structure where a carbazol-9-yl group substituted with a perfluoroalkyl group at the 2-position and the 7-position and a structural unit having a positive Hammett constant σ.sub.p (but excluding an aromatic hydrocarbon group) bond to each other directly or via a π-conjugated linking group, wherein at least a part of the carbazol-9-yl group and at least a part of the structural unit having a positive Hammett constant σ.sub.p and, if any, the π-conjugated linking group form a π-electron conjugated system, an organic light emitting device having a high emission efficiency can be provided.

Using a compound that contains a structure where a carbazol-9-yl group substituted with a perfluoroalkyl group at the 2-position and the 7-position and a structural unit having a positive Hammett constant σ.sub.p (but excluding an aromatic hydrocarbon group) bond to each other directly or via a π-conjugated linking group, wherein at least a part of the carbazol-9-yl group and at least a part of the structural unit having a positive Hammett constant σ.sub.p and, if any, the π-conjugated linking group form a π-electron conjugated system, an organic light emitting device having a high emission efficiency can be provided.

The present invention provides a novel ligand compound, a transition metal compound and a catalyst composition including the same.

The present invention provides a novel ligand compound, a transition metal compound and a catalyst composition including the same.

The present disclosure is directed to chemical compounds and to the use of such compounds in the treatment of diseases associated with an adrenergic receptor.

The present disclosure is directed to chemical compounds and to the use of such compounds in the treatment of diseases associated with an adrenergic receptor.

The present disclosure provides an organic compound represented by general formula [1] below.

##STR00001##

In formula [1], Ar.sub.1 and Ar.sub.2 each represent an alkyl group having 1 to 8 carbon atoms, an aromatic hydrocarbon group having 6 to 18 carbon atoms, or a heteroaromatic group having 3 to 17 carbon atoms. Ar.sub.1 and Ar.sub.2 may be the same or different. Ar.sub.3 and Ar.sub.4 are each a substituent having a carbazolyl group. Ar.sub.3 and Ar.sub.4 may be the same or different. Ar.sub.1 to Ar.sub.4 may be substituted. At least one of Ar.sub.1 to Ar.sub.4 has a tert-butyl group. The total number of tert-butyl groups in one molecule of the organic compound is 2 or more.

The invention relates to heterocyclic compounds which are suitable for use in electronic devices, and to electronic devices, in particular organic electroluminescent devices, containing said compounds.

The present disclosure belongs to the field of organic materials, and relates to an arylamine compound, and an electronic component using the same and an electronic device. The arylamine compound has a structure as shown in a Formula 1. The arylamine compound of the present disclosure is applied as a hole transport material in an OLED device, such that a good device performance and a lower voltage can be obtained.

##STR00001##

The present disclosure belongs to the field of organic materials, and relates to an arylamine compound, and an electronic component using the same and an electronic device. The arylamine compound has a structure as shown in a Formula 1. The arylamine compound of the present disclosure is applied as a hole transport material in an OLED device, such that a good device performance and a lower voltage can be obtained.

##STR00001##