Patent ID: 8193366

Claim:
A cyanine compound represented by general formula (VI) or (VII): wherein: ring-A 2 is an optionally substituted benzene or naphthalene ring; Y 4 and Y 5 each are independently a hydrogen atom, an organic group having 1 to 30 carbon atoms or a substituent represented by general formula (IV); X 2 is an oxygen atom, a sulfur atom, a selenium atom, —CR 3 R 4 —, —NH—, or —NY′; R l0 is a hydrogen atom, a halogen atom, an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, or an aryl group having 6 to 30 carbon atoms; R 11 is a substituent represented by general formula (IV); wherein, each of R a to R i is independently a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; a methylene group in the alkyl group having 1 to 4 carbon atoms may be replaced by —O — or —CO—; Z is a direct bond or an optionally substituted alkylene group having 1 to 8 carbon atoms; a methylene group in the alkylene group having 1 to 8 carbon atoms may be replaced by —O—, —S—, —CO—, —COO—, —OCO—, —SO 2 —, —NH—, —CONH—, —NHCO—, —N═CH—, or —CH═CH—; and M is Fe, Co, Ni, Ti, Cu, Zn, Zr, Cr, Mo, Os, Mn, Ru, Sn, Pd, Rh, Pt, or Ir; R 23 and R 24 each are independently a hydrogen atom, a halogen atom, an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, or an aryl group having 6 to 30 carbon atoms, and R 23 and R 24 may link together to form a ring structure n is an integer of 0 to 6; the polymethine chain may have a substituent; An q- is a q-valent anion; q is 1 or 2; and p is a factor keeping a neutrality of charge.