ABSTRACT
A novel bioelectrode system has been prepared in which an enzyme and a conducting polymer hydrogel are combined in a nanostructured scaffold. The latter consists of fibres of carbon NanoWeb, grown by chemical vapour deposition onto reticulated vitreous carbon (RVC). The catalytic currents produced by this new bioelectrode system are significantly larger than those obtained using conventional electrodes.
Subject(s)
Carbon/chemistry , Hydrogel, Polyethylene Glycol Dimethacrylate/chemistry , Nanostructures/chemistry , Electrochemical Techniques , Electrodes , Electrons , Glucose Oxidase/chemistry , Glucose Oxidase/metabolism , Nanostructures/ultrastructure , Oxidation-Reduction , Oxidoreductases Acting on CH-CH Group Donors/chemistry , Oxidoreductases Acting on CH-CH Group Donors/metabolism , Polymers/chemistryABSTRACT
The controlled transport and delivery of dichloromethane through platinum mesh coated with dodecylbenzenesulfonate-doped polypyrrole is demonstrated upon in situ electrochemical redox switching. Droplets of dichloromethane were observed to pass freely through the mesh upon reduction of the polymer as a result of the release of the surfactant dopant into the dichloromethane and the change in the surface energy of the polymer. Planar and liquid-filled tube configurations are investigated. These concepts are envisaged to prove useful for fluid control in microfluidic devices, in the preparation of microparticles for drug delivery, and in the development of organic microreactors.
