Patent ID: 8895850

Claim:
A phthalocyanine nanorod comprising an unsubstituted phthalocyanine and a substituted phthalocyanine, the phthalocyanine nanorod having a breadth of 100 nm or less and a ratio (length/breadth) of a length to the breadth, the ratio being less than 10, the unsubstituted phthalocyanine being represented by a general formula (1) or (2) (where X represents any one selected from the group consisting of a copper atom, a zinc atom, a cobalt atom, a nickel atom, a tin atom, a lead atom, a magnesium atom, a silicon atom, an iron atom, a palladium atom, TiO, VO, and AlCl), and the substituted phthalocyanine being represented by a general formula (3) or (4) (where X represents any one selected from the group consisting of a copper atom, a zinc atom, a cobalt atom, a nickel atom, a tin atom, a lead atom, a magnesium atom, a silicon atom, an iron atom, a palladium atom, TiO, VO, and AlCl; when Y1 to Y4 represent bonding groups that bond the phthalocyanine skeletons to R1 to R4, the bonding groups each being —(CH2)n- (n represents an integer of 1 to 10), —CH═CH—, —C≡C—, —O—, —NH—, —S—, —S(O)—, or —S(O)2-, R1 to R4 each represent a group selected from an alkyl group, a phenylene group, a naphthyl group, a pyrrole group, a thiophene group, and a phthalimide group; when Y1 to Y4 serving as the bonding groups are not present, R1 to R4 each represent —SO3H, —CO2H, an alkyl group, a phenyl group, a naphthyl group, a pyrrole group, a thiophene group, or a phthalimide group; a, b, c, and d each independently represent an integer of 0 to 4 and at least one of a to d is not zero).