Coupling of single-wall carbon nanotube and l-histidine on Ag microwires: New architectures for the assembling of NAD+ sensors

Fabrication strategies and electrochemical testing of innovative sensors, which combine carbon nanotube with l-histidine as mediator for NAD+ reduction are shown. A series of Ag-microelectrodes have been assembled with different architectures. The Ag-modified microelectrodes have been characterized and cyclic voltammetry (CV) experiments demonstrated that the electrochemical response is strongly correlated to their molecular architecture and the Ag/SWNT/l-histidine microwires offer the best performances for NAD+ detection.