| abstract |
In an optical recording medium having at least a recording layer and a reflective layer on a substrate, the recording layer has the following general formula (1):n n n n n n n n Wherein R 1 to R 6 are each independently hydrogen, halogen, nitro, cyano, hydroxyl, amino, carboxyl, sulfo, substituted or unsubstituted alkyl having less than 20 carbon atoms, alkoxy, alkylthio, aryloxy , Arylthio, alkenyl, acyl, alkoxycarbonyl, carbamoyl, acylamino, aralkyl, aryl or heteroaryl; R 7 represents halogen, aryl, heteroaryl, alkoxy, alkylthio, aryloxy or arylthio A represents a substituted or unsubstituted aromatic ring or heterocyclic ring having up to 20 carbon atoms; L 1 represents a ring together with the carbon atom to which it is attached and may be substituted or unsubstituted. It represents a divalent residue; M 1 represents a transition metal element) characterized in that it contains at least one dipyrromethene-metal chelate compound. |