| 摘要 |
PURPOSE:To provide a recording medium highly sensitive to near infrared rays, free of toxicity and capable of forming a uniform thin film by a vacuum deposition method, by providing an organic thin film comprising a specified silicon naphthalocyanine compound. CONSTITUTION:A specified silicon naphthalocyanine compound is represented by formula (I), wherein each of L and L' is appropriately selected from groups capable of covalent bonding to the center metal, i.e., silicon, and may be, for example, an alkyl, alkoxyl, siloxyl represented by R1R2R3Si-O-, hydroxyl or halogen. The silicon naphthalocyanine compound in which each of L and L' is a group other than a halogen or hydroxyl can be obtained most generally by 8 reaction of a silicon naphthalocyanine compound of formula (I) wherein L and/or L' is hydroxyl with a compound corresponding to the group capable of covalent bonding to the center metal, i.e., silicon. |
