The application of inert and insulating low density polyethylene (LDPE) inelectrochemical detection is null. However, in a recent study it was found that reactivespecies formed onto the surface of plasma-treated LDPE and other polymers promotethe electrocatalytic oxidation of dopamine. In this work, we examine the role ofplasma-treated LDPE as mediator in enzymatic glucose biosensors based on Glucoseoxidase and glass carbon substrate. Results indicate that plasma-induced changesfacilitate the electrocommunication between the enzyme and the substrate. Thechronoamperometric response of these sensors prove their bifunctionality since theoxidation of glucose to gluconolactone, which is catalyzed by the GOx, coexists withthe oxidation of dopamine thatis electrocatalytized by theplasma activated LDPE surface.
Read the paper here: Plasma-treated polyethylene as electrochemical mediator forenzymatic glucose sensors