| abstract |
A high-density optical information recording mediumncomprising, on a substrate, a recording layer capable ofnrecording information by irradiation of a laser beam at anwavelength of from 380 to 500 nm, wherein the recording layerncontains a compound represented by the following generalnformula (I):n nwhere R 1 to R 6 each represents, independently, a substituent,nM represents a metal atom, and n represents an integer of 1nor greater. |