Diagnostics of Functional Organosilicas Surface by Impedance Spectroscopy
Abstract
The systems including organosilicas with various content of aminopropyl groups and also 1,1-electrolyte, which is responsible for protonation of surface functional groups, were investigated by impedance spectroscopy. The conditions, at which electrical conductivity of the organosilicas is proportional to concentration of immobilized functional groups, have been found. Conductive properties of the organosilicas are determined by excess of counter-ions concentration in the diffusion constituent of intraporous double electric layer and by the electrolyte content in outer solution. A practical implementation of impedance spectroscopy for express-diagnostics of organosilicas has been proved.References
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