Author/Authors :
Gatto، نويسنده , , Emanuela and Venanzi، نويسنده , , Mariano and Palleschi، نويسنده , , Antonio and Stella، نويسنده , , Lorenzo and Pispisa، نويسنده , , Basilio and Lorenzelli، نويسنده , , Leandro and Toniolo، نويسنده , , Claudio and Formaggio، نويسنده , , Fernando and Marletta، نويسنده , , Giovanni، نويسنده ,
Abstract :
The electron conductivity and photocurrent generation properties of a self-assembled monolayer (SAM) formed by a helical hexapeptide chemisorbed on an interdigitated gold microelectrode have been investigated by cyclic voltammetry and photo-electrochemical experiments. Cyclic voltammetry measurements show that the peptide forms a densely packed self-assembled monolayer on the gold surface. Peculiar photocurrent/voltage responses have been obtained for the modified electrode, indicating that a photoinduced electron transfer from excited tryptophan to gold significantly contributes to the conductive properties of the peptide SAM.
Keywords :
Peptide self-assembled monolayers , Photocurrent generation , Intedigitated microelectrodes , Peptide-modified electrodes
