title: 3-methylthiophene self-assembled monolayers on planar and nanoparticle Au surfaces.
abstract: In this article the adsorption of 3-methylthiophene on planar and nanoparticle Au surfaces is investigated. The resulting systems are compared with a benchmark system based on 1-decanethiol. The characterization data collected evidence the formation of a packed 3-methylthiophene SAM on the planar surface. In particular, spectroscopic investigations suggest that 3-methylthiophene aromatic system is not adsorbed on the surface through the pi-electron system but rather through the S atom alone. On the other hand, the behavior of 3-methylthiophene on nanoparticle surfaces is notably different from that of the alkanethiol. Only a limited fraction of the surface of Au nanoparticles results to be actually coated after purification; this notwithstanding, the nanoparticle growth seems to be strongly influenced by the presence of such a labile encapsulating agent.
authors.affiliation: Dipartimento di Chimica, Università di Modena e Reggio Emilia, Via Campi 183, 41100 Modena, Italy.
authors.forename: Fabio
authors.initials: F
authors.lastname: Terzi
authors.forename: Renato
authors.initials: R
authors.lastname: Seeber
authors.forename: Laura
authors.initials: L
authors.lastname: Pigani
authors.forename: Chiara
authors.initials: C
authors.lastname: Zanardi
authors.forename: Luca
authors.initials: L
authors.lastname: Pasquali
authors.forename: Stefano
authors.initials: S
authors.lastname: Nannarone
authors.forename: Monica
authors.initials: M
authors.lastname: Fabrizio
authors.forename: Sergio
authors.initials: S
authors.lastname: Daolio