Adsorption stages and association of 1-methylguanosine and 7-METHYLGUANOSINE (cas 15313-37-8) in solutions of varying pH at charged interfaces

Add time:08/12/2019    Source:sciencedirect.com

A systematic study on the adsorption and association of 1-methylguanosine and 7-METHYLGUANOSINE (cas 15313-37-8) has been undertaken at the mercury|solution interface. The characteristic properties and adsorption parameters of the dilute and compact adsorption layers of both compounds were evaluated from the double-step Frumkin isotherm obtained and from the potential dependence of adsorption. The adsorption parameters were computed at various pH values and at different temperatures. The results are compared with the similar type of adsorption of guanosine. Methylation of guanosine molecules in positions 1 and 7 greatly affected its adsorption behaviour and the stacking interactions of the perpendicularly oriented layer of adsorbed molecules on the electrode surface.

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