Patent ID: 7838670

Claim:
A naphthalocyanine compound of the following formula (1): wherein R 111 , R 121 , R 131 and R 141 each independently represents a group of the following formula (II); R 112 , R 122 , R 132 and R 142 each independently represents a substituent selected from the group recited below; M 1 represents two monovalent metal atoms, a divalent metal atom, or a substituted metal atom including a trivalent or tetravalent metal atom, but M 1 is not a divalent zinc; n112, n122, n132 and n142 each independently indicates an integer of from 0 to 4: wherein R 211 , R 212 , R 213 , R 214 , R 215 , R 216 , R 217 and R 218 each independently represents a hydrogen atom or a substituent selected from the group recited below; X 211 and X 212 each independently represents —O—, —S— or —N(R 220 )—; R 219 and R 220 each independently represents a hydrogen atom, an aliphatic group, an aromatic group, or a 5-membered or 6-membered heterocyclic group having at least one of B, N, O, S, Se and Te that bonds via its carbon atom; n211 indicates an integer of 2 or more; n212 indicates an integer of 1 or more; when the formula has plural R 217 ′s, R 218 ′s, R 220 ′s X 212 ′s or n211′s, then the plural R 217 ′s, the plural R 218 ′s, the plural R 220 ′s, the plural X 212 ′s and the plural n211′s may be the same or different; R 211 and R 212 bonding to the α-positioned carbon atom relative to the oxygen atom bonding to the naphthalene ring of the naphthalocyanine skeleton are both hydrogen atoms; and wherein the substituent represented by R 112 , R 122 , R 132 , R 142 , R 211 , R 212 , R 213 , R 214 , R 215 , R 216 , R 217 and R 218 , each independently, is selected from the group consisting of a halogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, a heterocyclic group, a cyano group, a hydroxyl group, a nitro group, a carboxyl group, an alkoxy group, an aryloxy group, a silyloxy group, a heterocyclic-oxy 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 arylsulfonylamino group, a mercapto group, an alkylthio group, an arylthio group, a heterocyclic-thio group, a sulfamoyl group, a sulfo group, an alkyl or arylsulfinyl group, an alkyl or arylsulfonyl group, an acyl group, an aryloxycarbonyl group, an alkoxycarbonyl group, a carbamoyl group, an aryl or heterocyclic-azo group, an imido group, a phosphino group, a phosphinyl group, a phosphinyloxy group, a phosphinylamino group, and a silyl group.