ERBIUM-BASED COMPLEX MONOMER FOR OPTICAL AMPLIFIER, AND ITS POLYMER AND COPOLYMER

摘要

PURPOSE: Provided are an erbium-based complex monomer for optical amplifier material, an its polymer and a copolymer, as well as a copolymer of the monomer and different two or more of fluorine and/or chlorine-containing monomers. CONSTITUTION: The monomer represented by formula 1 is produced by complexing an itaconic imide into erbium. In the formula 1, R1 is an amic acid which can react an amic acid having (a) an acid radical capable of forming a complex with erbium ion and (b) an amine group capable of carrying out an imidation reaction, with an itaconic anhydride so as to form an amic acid, and R2 and R3, and R4 and R5 are 1,3-diketone material capable of forming a complex with europium ion, respectively.