SYNTHESIS, CHARACTERIZATION AND PROPERTIES OF POLY(1-HEXYLPYRRYLENE VINYLENE)

A new conducting polymer. poly(1-hexylpyrrylene vinylene), PHxPyV, was obtained from the monomer, 1-hexyl-2.5-bis(thiophenylmethylene)pyrrol e, by base induced elimination/polymerization. The resulting deep purp le conjugated polymer was partially soluble in a variety of organic so lvents. The undoped polymer has lambda(max)=563 nm (2.2eV), a band gap (band edge) of 1.69 eV, and also readily dopes with oxygen. The highe st yield (72%) was obtained when the polymer was synthesized at room t emperature with a monomer / base mole ratio of 1/4. Oxidative doping o f polymer films using an acetonitrile solution of gold trichloride yie lds electronically conductive polymers (2.5 S/cm) containing the AuCl4 - counter ion.