Photo-Crosslinked Redox Polymer Networks for Enzymatic Biosensors and Biofuel Cells. Oberflächenchemie und -physik von Mikrosystemen Bd. 18 # Pb., Großformat (24x17), 252 S., 91 Abb., davon 18 in Farbe, 11 Tab.
Over the past 50 years, innovative bioelectronic devices have become an integral part of medical diagnosis and personalized treatment, with glucose biosensors as the most prominent example. Enzymatic biofuel cells are bioelectronic devices that convert biological fuel into electrical energy. They recently received much attention as they are sustainable, do not contain toxic or corrosive components and operate in mild conditions. However, power output and stability need to be improved before commercial applications will become feasible. Therefore, it is essential to further understanding of the parameters that determine performance and lifetime of electrode materials.
A promising concept that has facilitated progress in recent years is the immobilization of biocatalysts in redox polymer networks. In this study, novel redox hydrogels are developed for use in enzyme electrodes. It is studied how the current density and stability of the films depend on molecular parameters of the polymers and the composition of the catalytic films. Strategies are presented to stabilize the films in physiological solutions containing phosphate anions and proteins. The application in highly sensitive glucose sensors and novel biofuel cells is successfully demonstrated.