INFLUENCE OF MERCAPTOPROPYLTRIMETHOXYSILANE ON THE CHEMICAL DEPOSITION OF GOLD MICROTUBES IN TRACK-ETCHED MEMBRANES AND THEIR APPLICATION IN SENSOR TECHNOLOGY

Diabetes is one of the global healthcare problems requiring the development of reliable and accurate devices for monitoring blood glucose levels. In this study, a non-enzymatic sensor based on a modified poly(ethylene terephthalate) track-etched membrane (PET TeMs) was developed for the electrochemical detection of glucose. For the first time, membrane modification using mercaptopropyltrimethoxysilane (MPTMS) was applied to improve the adhesion of gold nanostructures and enhance the efficiency of the gold electroless deposition process. The modification significantly increased the sensor real surface area to 0.91±0.25 cm². Voltammetric measurements showed a linear dependence between the current density and glucose concentration in the range of 0.1 to 16 mM, with a detection limit of 0.058 mM for PET TeMs/MPTMS@Au sensors. The developed sensors demonstrate good sensitivity and high stability, broadening their potential application in biosensing.