Vibrational spectra of metals treated with allyltrimethoxysilane sol–gel and self-assembled monolayer of allytrichlorosilane

A sol–gel has been prepared by using allyltrimethoxysilane (ATMS) as precursor, ethanol as homogenizer as well as solvent, and hydrochloric acid as catalyst. The sol–gel was employed for the coating treatment of aluminum. Self-assembled monolayer (SAM) with allyltrichlorosilane (ATCS) is another method used for the metal surface treatment in the present work. The treated metal surfaces were characterized with reflection adsorption infrared spectra (RAIR). Detailed interpretation and vibrational assignment have been given to the collected IR spectra of the sol–gel, xerogel and surface films of ATMS and the SAM of ATCS on aluminum as well as pure silanes. A series of investigation of the UV exposure and temperature effects has been carried out. Results from the investigation indicate that the UV radiation exposure or the high temperature thermal treatment will induce a chemical process on the organosilica coated surfaces.