Abstract
Two dimensional assemblies of palladium nanoparticles (PdNPs) were generated by in situ reduction of [PdCl4]2− ions attached to polyethyleneimine silane functionalized silicon and indium tin oxide (ITO) coated glass surfaces. An average size of 7.8±3.0nm was determined from atomic force microscopy (AFM) imaging. Surface zeta potential measurements enabled us to track the variation in surface charge during different steps of PdNP generation. Differential pulse voltammetry (DPV) in combination with impedance spectroscopy (IS) was used for the detection of dopamine (DA). A linear range of 2.5–130µM was observed for DA alone and in the presence of uric acid and ascorbic acid. In addition, impedance measurements showed an increase in conductance with increasing DA concentration in solution, which led to a calibration curve with a linear range of 0.05–130µM with the detection limit as low as 25nM (S/N=3).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
