Silanol-containing triarylamine derivatives

A silanol-containing triarylamine derivative represented by formula (1):

• wherein, R1 to R15 each independently represents a substituent selected from diarylamino groups represented by formula (2), linear, branched or cyclic monovalent hydrocarbon groups (which may contain the diarylamino group represented by the formula (2) as a substituent) having from 1 to 20 carbon atoms selected from the group consisting of:
• methyl, ethyl, propyl, isopropyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, isobutyl, tert-butyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, vinyl, allyl, propenyl, butenyl;
• phenyl, tolyl;
• 2-phenylethyl, 3-phenylpropyl, and 4-phenylbutyl, alkoxy groups having from 1 to 20 carbon atoms, aryloxy groups having from 6 to 20 carbon atoms, halogen atoms, a hydrogen atom, and an amino group, with the proviso that at least one of R1, R4, R6, R9, R11, and R14 is a substituent represented by the following formula:
• SiR16R17OH wherein, R16 and R17 each independently represents a linear, branched, or cyclic monovalent hydrocarbon group having from 1 to 20 carbon atoms selected from the group consisting of methyl, ethyl, propyl, isopropyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, isobutyl, tert-butyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, vinyl, allyl, propenyl, butenyl;
• phenyl, tolyl;
• 2-phenylethyl, 3-phenylpropyl, and 4-phenylbutyl,
• wherein, R21, R23, R25, R26, R28, and R30 each independently represents a substituent selected from linear, branched, or cyclic monovalent hydrocarbon groups having from 1 to 20 carbon atoms selected from the group consisting of:
• methyl, ethyl, propyl, isopropyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, isobutyl, tert-butyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, vinyl, allyl, propenyl, butenyl;
• phenyl, tolyl;
• 2-phenylethyl, 3-phenylpropyl, and 4-phenylbutyl, alkoxy groups having from 1 to 20 carbon atoms, aryloxy groups having from 6 to 20 carbon atoms, halogen atoms, a hydrogen atom, and an amino group;
• R22, R24, R27, and R29 each independently represents a substituent selected from linear, branched, or cyclic monovalent hydrocarbon groups having from 1 to 20 carbon atoms selected from the group consisting of:
• methyl, ethyl, propyl, isopropyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, isobutyl, tert-butyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, vinyl, allyl, propenyl, butenyl;
• phenyl, tolyl;
• 2-phenylethyl, 3-phenylpropyl, and 4-phenylbutyl, alkoxy groups having from 1 to 20 carbon atoms, aryloxy groups having from 6 to 20 carbon atoms, halogen atoms, a hydrogen atom, an amino group, and substituents represented by SiR16R17OH;
• with the proviso that without R25 and R26, carbon atoms at ortho positions with respect to the nitrogen atom may be coupled to form a carbazole ring structure.