Two model systems are common, one is based on thiols coupling (general formula R-SH) on Au(111) thin film with n-archetypal case of alkanethiols (both long and short-chain), and another on irreversible silane coupling to SiO2 thin films grown on Si substrates (Myhra 2004, Schreiber 2004).
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Schreiber, F. Structure of thiol-based self-assembled monolayers, in Encyclopedia of Materials: Science and Technology, Elsevier, Oxford, pp.9323–9332 (2001)
Schreiber F, (Oxford Univ); Self assembled monolayers: from simple model system to biofunctionalized interfaces, J. of Physics: Condensed. Matter 16; R881–R900 (2004)