PERFLUOROCYCLOPENTENE DERIVATIVE, PHOTOCHROMIC MATERIAL, OPTICAL RECORDING MEDIUM AND OPTICAL RECORDING

摘要

PURPOSE: To obtain a new perfluorocyclopentene derivative useful as an optical recording medium improved in regenerative cycle of recordings, having high degree of isomerization, high optical stability of isomerized molecules to a laser beam in time of read-out and a high threshold value. ;CONSTITUTION: This perfluorocyclopentene derivative is expressed by formula I, II or III [R₁ is H or a lower alkyl; R₂ is a lower alkyl; R is H, an alkyl, an alkoxy, cyano, etc.; (n), (k) and (m) are each 1-5], e.g. 1,2-bis[2,4-dimethyl-5-(4- N-phenylaminophenyl)thiophen-3-yl]perfluorocyclopentene, etc. The perfluorocyclopentene derivative is obtained by condensing a bisiodoarylthienylperfluorocyclopentene derivative with a specific amino compound in a usual method.;COPYRIGHT: (C)1996,JPO