Electric Properties of NMPTCNQ Suspensions in a Low Dielectric PermittivityPlasticizer

摘要

N-methylphenazinium tetracyanoquinodimethanide (NMP TCNQ =NMPTCNQ), an organic,solid-state, electronic conductor, was plasticized with diisobutyl phthalate (DIBP); electric properties of the mixtures and suspensions were studied with steady-state dc polarization, ac impedance, and cyclic voltammetry. NMPTCNQ suspensions in DIBP conducted mainly electronically, even when heavily plasticized, as long as particles remained insoluble and in physical contact, NMPTCNQ plasticized with up to 30% DIBP by weight decreased its electronic conductivity linearly to a background ionic conductivity level. Possible application of mixed conductivity suspensions for catalyzing or wiring enzymes substrates, and electrodes in electrochemical sensors is discussed. Reprints.