AZO METAL CHELATE DYE AND OPTICAL RECORDING MEDIUM
申请人:Shoda Hisashi
公开号:US20100098898A1
公开(公告)日:2010-04-22
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 the general formula (1) and Zn
2+
:
(wherein R
1
represents a linear or branched alkyl group that may be substituted, or a cycloalkyl group that may be substituted; Y represents a linear or branched alkyl group substituted with at least two fluorine atoms; R
2
, R
3
, R
4
, R
5
and R
6
each independently represents a hydrogen atom or a linear or branched alkyl group that may be substituted, and R
3
and R
4
, R
4
and R
5
, or R
5
and R
6
may be bonded with each other to form a ring; and a proton is released from the compound of formula (1) to form the chelate dye together with Zn
2+
).