Abstract:
Provided are novel dinuclear indium catalysts of formula (A) that are capable of living and immortal ring opening polymerization and copolymerization of cyclic ester monomers for the preparation of biodegradable polymers and copolymers, in particular polyesters. Also disclosed are polymerization methods and polymer products. These dinuclear indium catalysts allow less costly, highly reactive living polymerization of cyclic ester monomers with possible high turn over rates and/or substantial stereo chemical and microstructure control.
Abstract:
A method for producing a polymer comprising reacting a fluoride and a monomer having a boronic acid moiety, or a salt thereof, in acidic aqueous solution and/or in an aliphatic alcohol. Polymerization occurs with the addition of an oxidizing agent. The method may further comprise the step of purification of the polymer by centrifugation with 0.5 M HCl and/or dispersion of the polymer in a solvent. The polymer has a morphology tunable by changing the solvent.
Abstract:
A substituted polyaniline whose self-doped state can be controlled via complexation between boronic acid groups along the backbone with D-fructose in the presence of fluoride is described. For the first time, this allows the formation of a water-soluble, self-doped conducting polymer under the polymerization conditions. In turn this facilitates the growth of polyaniline over a wider pH range
Abstract:
Provided are novel dinuclear indium catalysts of formula (A) that are capable of living and immortal ring opening polymerization and copolymerization of cyclic ester monomers for the preparation of biodegradable polymers and copolymers, in particular polyesters. Also disclosed are polymerization methods and polymer products. These dinuclear indium catalysts allow less costly, highly reactive living polymerization of cyclic ester monomers with possible high turn over rates and/or substantial stereo-chemical and microstructure control.
Abstract:
A substituted polyaniline whose self-doped state can be controlled via complexation between boronic acid groups along the backbone with D-fructose in the presence of fluoride is described. For the first time, this allows the formation of a water-soluble, self-doped conducting polymer under the polymerization conditions. In turn this facilitates the growth of polyaniline over a wider pH range.
Abstract:
A method for producing a polymer comprising reacting a fluoride and a monomer having a boronic acid moiety, or a salt thereof, in acidic aqueous solution and/or in an aliphatic alcohol. Polymerization occurs with the addition of an oxidizing agent. The method may further comprise the step of purification of the polymer by centrifugation with 0.5 M HCl and/or dispersion of the polymer in a solvent. The polymer has a morphology tunable by changing the solvent.