Glutathione(GSH) can be self-assembled as a monolayer on Au electrode which acts as an 'ion-gate' inhibiting electron transfer from electrode to Fe(CH)_6￣(3-) ions.The addition of La￣(3+) or Ca￣(2+) ions ca...Glutathione(GSH) can be self-assembled as a monolayer on Au electrode which acts as an 'ion-gate' inhibiting electron transfer from electrode to Fe(CH)_6￣(3-) ions.The addition of La￣(3+) or Ca￣(2+) ions can regulate the ion-gate which responses to the Fe(CN) reduction on electrode.The regulative function of La￣(3+) on the ion-gate response was studied in aqueous Fe(CN) solution at pH 5.6 and compared with that of Ca￣(2+).The methods of cyclic voltammetry and chronocoulommetry were applied to examine the effect of La￣(3+) or Ca￣(2+) ions on the conformation of GSH monolayer and the diffusion coefficient of Fe(CN) ions.It was found that La￣(3+) has much stronger effect than Ca￣(2+).展开更多
文摘Glutathione(GSH) can be self-assembled as a monolayer on Au electrode which acts as an 'ion-gate' inhibiting electron transfer from electrode to Fe(CH)_6￣(3-) ions.The addition of La￣(3+) or Ca￣(2+) ions can regulate the ion-gate which responses to the Fe(CN) reduction on electrode.The regulative function of La￣(3+) on the ion-gate response was studied in aqueous Fe(CN) solution at pH 5.6 and compared with that of Ca￣(2+).The methods of cyclic voltammetry and chronocoulommetry were applied to examine the effect of La￣(3+) or Ca￣(2+) ions on the conformation of GSH monolayer and the diffusion coefficient of Fe(CN) ions.It was found that La￣(3+) has much stronger effect than Ca￣(2+).
