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Method for Preparing Dioxyheterocycle-Based Electrochromic Polymers

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
A method for preparing a conjugated polymer involves a DHAP polymerization of a 3,4-dioxythiophene, 3,4-dioxyfuran, or 3,4-dioxypyrrole and, optionally, at least one second conjugated monomer in the presence of a Pd or Ni comprising catalyst, an aprotic solvent, a carboxylic acid at a temperature in excess of C. At least one of the monomers is substituted with hydrogen reactive functionalities and at least one of the monomers is substituted with a Cl, Br, and/or I. The polymerization can be carried out at temperature of C. or more, and the DHAP polymerization can be carried out without a phosphine ligand or a phase transfer agent. The resulting polymer can display dispersity less than 2 and have a degree of polymerization in excess of 10.
Reynolds, John R. (Dunwoody, GA), Estrada, Leandro (Decatur, GA), Deininger, James (Highland Heights, OH), Arroyave-Mondragon, Frank Antonio (Valencia, ES)
14/ 897,063
June 18, 2014
[0002] This invention was made with government support under FA9550-09-1-0320, N00014-11-1-0245, and DE-FG0203ER15484 awarded by the United States Air Force, United States Navy and the United States Department of Energy. The government has certain rights in the invention.