We studied the effect of nature terminal group thiols with same chain length HS (CH 2 )8 – R (R: -CH 3 , OH, -NH ) on electrodesorption behaviour well-formed SAMs (the self-assembled monolayers), their stability and blocking ability using voltammetry chronoamperometry. The functional determines surface properties SAM provides basis for subsequent interactions (for example, peptides, proteins, D...