Patent ID: 7759504

Claim:
A triarylamine derivative represented by the following Formula (I): wherein, in Formula (I): R 111 and R 112 each independently represent a hydrogen atom, an aliphatic group or an aromatic group, R 121 and R 122 each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, or a substituted or unsubstituted alkynyl group, R 113 , R 114 , R 115 , R 116 , R 123 , R 124 , R 125 and R 126 each independently represent a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, a cyano group, a hydroxy group, a carboxy group, an alkoxy group, an aryloxy group, a silyloxy group, an acyloxy group, a carbamoyloxy group, an alkoxycarbonyloxy group, an aryloxycarbonyloxy group, an amino group, an acylamino group, an aminocarbonylamino group, an alkoxycarbonylamino group, an aryloxycarbonylamino group, a sulfamoylamino group, an alkyl or aryl-sulfonyl amino group, a mercapto group, an alkylthio group, an arylthio group, a sulfamoyl group, a sulfo group, an alkyl- or aryl-sulfinyl group, an alkyl- or aryl-sulfonyl group, an acyl group, an aryloxycarbonyl group, an alkoxycarbonyl group, a carbamoyl group, an imido group, a phosphino group, a phosphinyl group, a phosphinyloxy group, a phosphinylamino group, or a silyl group, provided that at least one pair among R 111 and R 121 , R 112 and R 122 , R 113 and R 123 , R 114 and R 124 , R 115 and R 125 , and R 116 and R 126 includes two different groups; at least one ring may be formed by mutual bonding in at least one pair among R 111 and R 112 , R 111 and R 114 , R 113 and R 114 , R 113 and R 123 , R 123 and R 124 , R 121 and R 124 , R 121 and R 122 , and two R 116 s which are respectively bound to different phenyl groups; X m− represents an m-valent anion; m and n represent 1 or 2; and a product of m and n is 2.