| abstract |
(57) [Summary] [Structure] A diarylethene compound represented by the following general formula (1). [Chemical 1] (However, in the formula, n represents an integer of 2 to 5, and A represents the general formula (2). B is the general formula (3) or the general formula (4) [Chemical 4] Represents 1, l, m, o are integers of 1 or 2, R 1 , R 5 to R 7 is an alkyl group, R 2 to R 4 and R 8 to R 10 are hydrogen atoms, An alkyl group, a dialkylamino group, an alkoxy group, a cyano group or a nitro group, P, Q and T represent an aromatic group or a heterocyclic group. ) And the optical recording medium using the diarylethene compound represented by the general formula (1) as a recording material, the temperature of the optical recording medium at the time of recording and reproducing is changed from that at the time of recording. An optical recording / reproducing method for an optical recording medium using a diarylethene compound, characterized in that the temperature is set to 40 ° C. or higher. [Effect] It has excellent thermal stability, moisture resistance, sensitivity, and photochromic properties with good durability against repeated coloring and decoloring. It can be applied to reversible optical recording materials with excellent performance. Further, it is possible to prevent the recording from being destroyed during reproduction. |