| abstract |
A heat mode optical information-recording medium comprising a substrate having thereon a recording layer on which information can be recorded by laser irradiation, wherein said recording layer contains a cyanine dye compound represented by the following general formula (I):wherein DYE+ represents a monovalent cyanine dye cation; n represents an integer of 1 or more; R5 and R6 each independently represents a substituent group; R7 and R8 each independently represents an alkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group or a heterocyclic group; R5 and R6, R5 and R7, R6 and R8 or R7 and R8 may be connected to each other to form a ring; and r and s each independently represents an integer of from 0 to 4 and when r or s is 2 or more, a plurality of R5 groups and a plurality of R6 groups may, respectively, be the same or different from each other. |