| 摘要 |
PURPOSE:To improve the heat stability of an anionic photochromic molecule and to improve the characteristic as a optical recording material. CONSTITUTION:In the photochromic thin film, the anionic photochromic molecule such as anionic spiropylanes compd. and the nonpolar molecule such as arom. hydrocarbon is adsorped on the heat decomposition product thin film of unorg. lamellar crystal having anion adsorptivity such as hydrotalcite type compd. |
