Organic conducting salts are known as electrode materials that can acc
ept electrons from biological molecules including a variety of differe
nt enzymes. This unusual property is not fully understood yet, This st
udy investigates the biocatalytic properties of the organic conducting
salt N-methylphenazinium tetracyano-p-quinodimethane (NMP-TCNQ) as a
prototype system in connection with the enzyme (glucose oxidase using
impedance spectroscopy. A mathematical model is applied to provide an
understanding of the observed effects in the impedance spectrum, and a
model involving TCNQ(0) as the mediating species is proposed to accou
nt for the observed experimental data.