申请人:Shoda Hisashi
公开号:US20100015382A1
公开(公告)日:2010-01-21
The invention provides an azo metal chelate dye suitable for use in a recording layer of an optical recording medium capable of high-speed recording or an optical recording medium having plural recording layers, and an optical recording medium. The azo metal chelate dye comprises an azo dye compound represented by general formula (1) and a metal:
(wherein R
1
represents a linear or branched alkyl group that may be substituted or a cycloalkyl group that may be substituted; R
2
and R
3
each independently represents a hydrogen atom, a linear or branched alkyl group that may be substituted, an aryl group that may be substituted, or a heterocyclic group that may be substituted; R
4
, R
5
, R
6
, R
7
, and R
8
each independently represents a hydrogen atom or a linear or branched alkyl group that may be substituted, and R
4
and R
5
, R
4
and R
6
, or R
5
and R
7
may be bonded to each other to form a ring; Y represents a linear or branched alkyl group substituted with at least two fluorine atoms; and the chelate dye is constituted of the compound represented by general formula (1) from which a proton is released, and the metal).