| 摘要 |
PURPOSE:To obtain an optical recording medium capable of optical writing with semiconductor laser, by a method wherein; one or more A layer(s) consisting of monomolecular film of diacetylene derivative compound having hydrophilic portions as well as hydrophobic portions and one or more B layer(s) consisting of a monomolecular film containing at least one among a pyrylium dye, a thiopyrylium dye, and a selenapyrylium dye, are so laminated as to have two or more joint surfaces of the A and B layers. CONSTITUTION:As a DA compound of diacetylene derivative compound having hydrophilic portions and hydrophobic portions, a compound shown by a formula (I) is typically used. On the other hand, a pyrylium dye group 5, i.e. a pyrylium dye, a thiopyrylium dye, and a selenapyrylium dye, is a compound shown by a structural formula (II) and has an absorption peak at 780-900nm and heats by irradiation of an infrared ray of this wave length. An optical recording medium consists of a substrate 1 and a recording layer 2 formed thereon. The three-layer recording layer 2 is so constructed as to form on a substrate 1 successively a B layer 4 containing the pyrylium dye group 5, an A layer 3 made of a monomolecular cumulative film of two degree made of the DA compound, and a B layer 4 of monomolecular film containing the pyrylium dye group 5. |
