title: Electrochemical characterization of a mixed self-assembled monolayer of 6-thioguanine and guanine on a mercury electrode.
abstract: A monolayer constituted by chemisorbed 6-thioguanine and physisorbed guanine molecules was formed on a hanging mercury drop electrode from deoxygenated solutions of 6-thioguanine (6TG) and guanine (G). The mixed monolayer was characterized by chronoamperometry, cyclic voltammetry, and phase-sensitive ac voltammetry under in situ conditions, and the experimental data revealed a compact packing of molecules in the film. Ex situ measurements in the presence of dissolved oxygen proved that the mixed monolayer is stable in solutions lacking 6TG and G.
authors.affiliation: Departamento de Química Física y Analítica, Universidad de Oviedo, E-33071 Oviedo, Asturias, Spain.
authors.forename: Zoraida
authors.initials: Z
authors.lastname: González Arias
authors.forename: Jesús Luis
authors.initials: JL
authors.lastname: Muñiz Alvarez
authors.forename: Juan Miguel
authors.initials: JM
authors.lastname: López Fonseca
mesh_terms: D004563:Electrochemistry; D004566:Electrodes; D006147:Guanine / Q000737:chemistry*; D008628:Mercury / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D013866:Thioguanine / Q000737:chemistry*
chemical_list: D006147:Guanine; D013866:Thioguanine; D008628:Mercury; D010100:Oxygen