Citation:
Kerry Bridge, Frank Davis, Stuart D. Collyer, Séamus P. J. Higson; Flexible Ultrathin PolyDVB/EVB Composite Membranes for the Optimization of a Lactate Sensor. Electroanalysis, 2007, Volume 19, Issue 5 , Pages 567-574
Abstract:
An ultrathin composite membrane has been developed as the outer covering barrier
in a model amperometric lactate oxidase enzyme electrode. The membrane was
formed by cathodic electropolymerization of divinylbenzene/ethylvinylbenzene at
the surface of a gold coated polyester support membrane. Permeability
coefficients were determined for O2 and lactate across membranes with a range of
polymer thicknesses. Anionic interferents (such as ascorbate) were screened from
the working electrode by the composite membrane. The composite enzyme electrode
showed an increased working concentration range and extended linearity of
responses in comparison to an uncoated enzyme electrode.
