Abstract
A kinetic model for the reductive desorption of self-assembled monolayers of short-chain alkanethiols has been developed. The monolayer is described as a set of close-packed thiol domains, which for mathematical convenience are modeled as circular and equal in size. Desorption is assumed to occur via two parallel paths, a first route involving the removal of the thiol molecules at the edge of the adsorbate domains, and a second route involving the desorption of the thiol molecules inside the patches through a nucleation and growth mechanism. Analytical expressions for the chronoamperometric current resulting from reductive desorption of the monolayer are also derived and compared with experimental results. Theoretical predictions were found to account satisfactorily for the dependence of the chronoamperometric shape with the desorption potential for butanethiol and nonanethiol monolayers. Thus, the observed chronoamperometric broadening, and the simultaneous increase of the initial current, could be expla...
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.
