| abstract |
(57) [Problem] To provide an optical recording medium corresponding to a blue laser beam. SOLUTION: In an optical recording medium provided with a recording layer on which information can be written and / or read by a laser on a substrate, the recording layer has the following general formula (I): (Wherein, R 1 to R 4 each independently represent an aromatic ring or a heterocyclic ring which may have a substituent, and X 1 to X 8 Each independently represents a hydrogen atom, a halogen atom or a nitro group, and M represents a hydrogen atom or a metal. An optical recording medium containing a porphyrin compound represented by the formula (1). |