| 摘要 |
A novel triarylamine compound having a bipolar property is provided. The triarylamine compound can be used for a hole-injection layer, a hole-transport layer, a light-emitting layer, or an electron-transport layer in a light-emitting element. The triarylamine compound can also be used as a host material with a light-emitting material which emits relatively short-wavelength light, in a structure where the host material and the guest material constitute a light-emitting layer. The triarylamine compound of the present invention is a fluorescent compound and therefore can also be used as a light-emitting substance of a light-emitting layer. A light-emitting element having high emission efficiency is provided. A light-emitting device, an electronic device, or a lighting device having low power consumption is provided. |
| 主权项 |
1. A triarylamine compound represented by a general formula (G1), wherein, in the formula: E1 represents an oxygen atom or a nitrogen atom, and when E1 represents a nitrogen atom, a substituted or unsubstituted phenyl group or a substituted or unsubstituted biphenyl group is bonded to the nitrogen atom; α1 to α3 each independently represent a substituted or unsubstituted phenylene group or a substituted or unsubstituted biphenylene group, and m and n are each independently 0 or 1; Ar1 represents any of a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted triphenylenyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzothiophenyl group, a substituted or unsubstituted dibenzofuranyl group, and an aryl group represented by a general formula (G1-2) below; Ar2 represents any of a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted triphenylenyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzothiophenyl group, and a substituted or unsubstituted dibenzofuranyl group; and R1 to R4 each independently represent any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, and a substituted or unsubstituted phenyl group, and wherein, in the formula: E2 represents an oxygen atom or a nitrogen atom, and when E2 represents a nitrogen atom, a substituted or unsubstituted phenylene group, a substituted or unsubstituted biphenylene group is bonded to the nitrogen atom; α4 to α6 each independently represent a substituted or unsubstituted phenyl group or a substituted or unsubstituted biphenyl group, and q is 0 or 1; Ar3 represents any of a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted triphenylenyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzothiophenyl group, and a substituted or unsubstituted dibenzofuranyl group; and R5 to R8 each independently represent any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, and a substituted or unsubstituted phenyl group. |
