NOVEL COMPOUND, OPTICAL FILTER USING THE COMPOUND, AND OPTICAL RECORDING MATERIAL

摘要

Disclosed is a compound represented by the general formula (I): (I) wherein the rings A and B independently represent a benzene ring, naphthalene ring or heterocyclic ring which may have a substituent; R<SUP>1</SUP> and R<SUP>2</SUP> independently represent an alkyl group having 1 to 8 carbon atoms which may have a substituent, provided that R<SUP>1</SUP> and R<SUP>2</SUP> may together form a ring and a methylene group in the alkyl group having 1 to 8 carbon atoms may be substituted by -O- or -CH=CH-; An<SUP>q-</SUP> represents an anion having a valency of q; q is 1 or 2; and p represents a factor required for keeping the electrical charge neutral.