| 摘要 |
<p>This invention provides spiropyran compounds represented by general formula (I), wherein R1 represents C¿1? to C20 alkyl or aralkyl; R?2, R3, R4 and R5¿ may be the same or different from each other and each represents hydrogen, C¿1? to C6 alkyl, aryl, aralkyl, C1 to C5 alkoxy, halogen, cyano, trichloromethyl, trifluoromethyl or nitro; R?6 and R7¿ may be the same or different from each other and each represents hydrogen, C¿1? to C6 alkyl, aryl, aralkyl, halogen, cyano or nitro; X represents oxygen or sulfur; Y represents selenium or (a); Z represents (b), provided that X represents sulfur when Y represents (a). These compounds can be used by themselves as the material for recording material, photosensitive material, optical filter, decoration, etc. In addition they may be homopolymerized or copolymerized with other polymerizable compound(s) to afford polymeric spiropyran compounds, thus being applicable to, for example, optical and mechanical elements.</p> |
