Mahmoud Aldissi

Novel colloidal dispersons of polyaniline

Colloidal polyaniline1 has been prepared in good yield (>50%) using a tailor-made random co-polymer as a steric stabiliser, which is chemically grafted onto the polyaniline microparticles formed by the oxidative polymerisation process.

Synthesis of soluble conducting polymers: polyacetylenes and polyromatics

Soluble polyacetylene and some of its derivatives and soluble polyaromatics have been synthesized by exposure of the monomer, in an arsenic trifluoride solution, to aresenic pentafluoride gas, at temperatures varying between room temperature and –90 °C; and instantaneous polymerizations is observed, and the obtained polymers are completely soluble in acetone, methylene dichloride, or tetrahydrofuran.

Soluble conducting poly(acetylene)block copolymers

Soluble conducting poly(acetylene)–poly(isoprene) block copolymers have been synthesized by using the polymeric catalyst formed by the reaction of poly(isoprenyl-lithium) with tetrabutoxytitanium in toluene at room temperature; an instantaneous polymerization of acetylene is observed leading to the formation of a block copolymer in which the poly(isoprene) chain length is the determining factors of the materials electrical behaviour.