申请人:Watanabe Kousuke
公开号:US20090035505A1
公开(公告)日:2009-02-05
The invention provides an optical information recording medium having at least a substrate and a recording layer capable of recording information provided on the substrate. The recording layer contains at least a metal complex compound obtained by forming a salt from a cationic part and an anionic part, and the cationic part being a cation of a metal complex having a molar absorbance coefficient (∈) in the wavelength range of 350 to 1300 nm of 10,000 dm
3
mol
−1
cm
−1
or less when an anionic part is any one of Cl
−
, Br
−
, I
−
, ClO
4
−
, PF
6
−
, BF
4
−
, SO
4
2−
, or CF
3
SO
3
−
. A thermal decomposition temperature of the metal complex is preferably 250° C. or higher when an anionic part of any one of Cl
−
, Br
−
, I
−
, ClO
4
−
, PF
6
−
, BF
4
−
, SO
4
2−
, or CF
3
SO
3
−
.