I have gold nanoparticles suspension in citrate buffer and i want to modify the WE of screen printed electrode with is particles using thiosalicylic acid , if any one faced similar work, please give me guidelines or the protocol was used.
How do you modify electrode's surface with thiosalicylic acid? It's only adsorption or something like polymeric film production?
I worked with some polymeric films followed by adsorption of AuNPs on the modified surface, and electrochemical polymerization of monomer+AuNPs in the same solution.
You can try some of these methods and/or vary the AuNPs concentration to improve the sensibility.