In this article, a dynamical force microscopy study of self-assembled monolayers of organosilanes, grafted on a silica support, is reported. Organosilanes, terminated either with a functional group (ethylene glycol) or with a methyl group, were used. The influence of the reaction time and the solvent composition on the grafting was investigated to improve the homogeneity of the self-assembled monolayers. Numerical simulations of approach-retract curves, obtained in the tapping mode, were performed and compared to experimental ones.Informations, such as mechanical response and height of the grafted organic layers, have been obtained.
This paper presents unenhanced Raman spectra of self-assembled monolayers [2-(22-trichlorosilanyldocosoxy)ethyl acetate], grafted on to silicon dioxide wafers, obtained by using a confocal Raman microscope. The quality of monolayer formation, at the micrometer scale, was monitored by drawing maps of a few square micrometers and homogeneous monolayers were obtained using a detergent cleaning procedure. The results are in good agreement with those obtained previously by atomic force microscopy studies.
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