Triarylamine Derivative, Light-Emitting Substance, Light-Emitting Element, Light-Emitting Device, and Electronic Device

A triarylamine derivative represented by a general formula (G1),

• wherein Ar represents a substituted or unsubstituted phenyl group or a substituted or unsubstituted biphenyl group,
• wherein α represents any of substituents represented by structural formulae (α-1) and (α-2),
• wherein β represents any of substituents represented by structural formulae (β-2) and (β-3),
• wherein n and m each independently represent 1 or 2, and
• wherein R1 to R8 each independently represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, and a phenyl group.

A triarylamine derivative represented by a general formula (G1),

• wherein Ar represents any of substituents represented by structural formulae (Ar-1) to (Ar-4),
• wherein α represents any of substituents represented by structural formulae (α-1) and (α-2),
• wherein β represents hydrogen or a substituted or unsubstituted naphthyl group,
• wherein n and m each independently represent 1 or 2, and
• wherein R1 to R8 each independently represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, and a phenyl group.

A triarylamine derivative represented by a general formula (G1),

• wherein Ar represents any of substituents represented by structural formulae (Ar-1) to (Ar-4),
• wherein α represents a substituted or unsubstituted naphthyl group,
• wherein β represents any of substituents represented by structural formulae (β-1) to (β-3),
• wherein n and m each independently represent 1 or 2, and
• wherein R1 to R8 each independently represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, and a phenyl group.

A triarylamine derivative represented by a general formula (A2),

• wherein Ar represents a substituted or unsubstituted aryl group,
• wherein β represents hydrogen or a substituted or unsubstituted naphthyl group,
• wherein X represents a halogen group,
• wherein n and m each independently represent 1 or 2, and
• wherein R1 to R8 each independently represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, and a phenyl group.

A triarylamine derivative comprising:

• a naphthyl group bonded to a nitrogen through a phenylene group or a biphenylene group;
• an aryl group bonded to the nitrogen, the aryl group being selected from a substituted or unsubstituted phenyl group and a substituted or unsubstituted naphthyl group;
• and
• one of the naphthyl group or hydrogen,
• wherein the one of the naphthyl group and hydrogen is bonded to the nitrogen through a phenylene group or a biphenylene group.