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Type: 
Journal
Description: 
A multilayer self-assembled monolayer (MuL-SAM) composed by i) cysteamine, ii) 4-formilphenyl boronic acid and iii) dopamine has been used to functionalize polycrystalline Au. Its electrochemical characterization shows how this surface engineering makes Au reactive toward dopamine. Kelvin probe measurements have shown how MuL-SAM tunes the surface potential of the bare Au. Such measurements are correlated with the electrical performances of organic field-effect transistors (OFETs), whose source/drain electrodes have been functionalized by MuL-SAM. Such devices, operated as charge-injection organic gauges (CIOGs), have shown sensitivity to the concentration of dopamine in the range of [1, 50] nM.
Publisher: 
IEEE
Publication date: 
3 Nov 2015
Authors: 

Francesca Leonardi, Stefano Casalini, Cristiano Albonetti, Alessandro Kovtun, Andrea Liscio, Fabio Biscarini

Biblio References: 
Volume: 62 Issue: 12 Pages: 4251-4257
Origin: 
IEEE Transactions on Electron Devices