To provide a metal-chelate azo dye suitable for a recording layer for an optical recording medium and to provide an optical recording medium.
The metal-chelate azo dye comprises an azo dye compound represented by formula (1) and a metal. In the formula, R1 is a linear or branched alkyl group which may be substituted or a cycloalkyl group which may be substituted; R2 and R3 are each independently a hydrogen atom, a linear or branched alkyl group which may be substituted, an aryl group which may be substituted or a heterocyclic group which may be substituted; R4, R5, R6, R7 and R8 are each independently a hydrogen atom or a linear or branched alkyl group which may be substituted, provided that R4 and R5, R4 and R6, or R5 and R7 may be bonded together to form a ring; and Y is a linear or branched alkyl group substituted with at least two fluorine atoms.
UCHIDA NAOYUKI
SATAKE KENICHI
NODA YOSHIHIRO
Jiro Kobe