Patent ID: 8116194

Claim:
An optical information recording method comprising irradiating an optical information recording medium containing a metal fine particle capable of generating local plasmon resonance on recording light to be condensed at the time of recording information and a vaporizable material with the recording light and vaporizing the vaporizable material by light absorption on the basis of the recording light or heat following the light absorption, thereby forming a recording mark composed of a cavity in conformity with the recording light, wherein, the vaporizable material is coordinated with the metal fine particle, the vaporizable material has an alkyl chain whose terminal is substituted with a coordinated terminal group which is coordinated with the metal fine particle, the coordinated terminal group is a thiol group, the vaporizable material is one in which a part of a two-photon absorbing material capable of being vaporized by two-photon absorption is substituted with an alkylthiol group, and the vaporizable material is represented by formula (2):