title: Electroanalytical measurements without electrolytes: conducting polymers as probes for redox titration in non-conductive organic media.
abstract: Electroanalytical methods have been applied only in conducting media. An application of conducting polymers allows to overcome this limitation. If such material is in electrochemical equilibrium with dissolved redox active species, its electrical conductivity depends on the redox potential of these species. Therefore, conductometric measurements with conducting polymers can provide about the same information as classical redox electrodes. The approach was applied for redox titration. Equivalent points obtained by this titration in aqueous and organic electrolytes were identical. Then the approach was applied for determination of bromine number by redox titration in non-conducting organic phase.
authors.affiliation: Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, Regensburg, Germany.
authors.forename: Ulrich
authors.initials: U
authors.lastname: Lange
authors.forename: Vladimir M
authors.initials: VM
authors.lastname: Mirsky
mesh_terms: D004553:Electric Conductivity; D055664:Electrochemical Techniques / Q000295:instrumentation; D004573:Electrolytes; D015335:Molecular Probes / Q000737:chemistry*; D010084:Oxidation-Reduction; D011108:Polymers / Q000737:chemistry*; D017186:Titrimetry / Q000295:instrumentation
chemical_list: D004573:Electrolytes; D015335:Molecular Probes; D011108:Polymers