Block Copolymerization of Conducting Polymers With Conventional Polymers
Original Publication Date: 1988-Aug-01
Included in the Prior Art Database: 2005-Feb-15
Novel block copolymers can be synthesized from environmentally stable conducting polymers and conventional polymers by radical anion catalyzed polymerization. These synthesized block copolymers contain the properties of conducting polymers and conventional polymers within a single polymer chain. In the figure a typical reaction scheme for the block copolymerization of 3-methyl thiophene with methyl-methacrylate is shown. The methyl thiophene is iodinated to give 3-methyl-2, 5-diiodothiophene. The 3-methyl-2,5-diiodothiophene is then stirred with magnesium in THF (tetrahydrofuran) solvent at 70-80oC under nitrogen for more than 16 hours. Bis (1, 3-diphenylphosphino) propane nickel chloride is then added to the stirred solution to produce poly (3-methyl thiophene) containing 3-methyl thiophene magnesium iodide as the end group.