| 摘要 |
<p>An optical recording material for use in an optical recording layer of an optical recording medium comprising the optical recording layer provided on a substrate, the optical recording material comprising a cyanine compound represented by general formula (I): wherein rings A and B each represent a substituted or unsubstituted benzene or naphthalene ring, X represents O, S, Se, CR 3 R 4 or NY; one of R 1 and R 2 represents a specific group of formula (II) or (III), with the other representing a C1 to C30 organic group; R 3 and R 4 each represent a C1 to C30 organic group; Y, Y 1 , and Y 2 each represent a hydrogen atom or a C1 to C30 organic group; Z represents a hydrogen atom, a halogen atom or a cyano group; An m represents an m-valent anion; m represents an integer of 1 or 2; and p represents a coefficient maintaining charge neutrality.</p> |
