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. (c) 2006 Elsevier B.V All rights reserved.
Self-assembled peptide monolayers on interdigitated gold microelectrodes
MARLETTA, Giovanni
2007-01-01
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. (c) 2006 Elsevier B.V All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
