title: Mono- and bi-functional arenethiols as surfactants for gold nanoparticles: synthesis and characterization.
abstract: Stable gold nanoparticles stabilized by different mono and bi-functional arenethiols, namely, benzylthiol and 1,4-benzenedimethanethiol, have been prepared by using a modified Brust's two-phase synthesis. The size, shape, and crystalline structure of the gold nanoparticles have been determined by high-resolution electron microscopy and full-pattern X-ray powder diffraction analyses. Nanocrystals diameters have been tuned in the range 2 ÷ 9 nm by a proper variation of Au/S molar ratio. The chemical composition of gold nanoparticles and their interaction with thiols have been investigated by X-ray photoelectron spectroscopy. In particular, the formation of networks has been observed with interconnected gold nanoparticles containing 1,4-benzenedimethanethiol as ligand.
authors.affiliation: ENEA (Italian National Agency for New Technologies, Energy and the Sustainable Economic Development), UTTMATB (Technical Unit of Materials Technologies - Brindisi), Brindisi Research Centre, S,S, 7 Appia km, 706, 72100 Brindisi, Italy. floriana.vitale@enea.it.
authors.forename: Floriana
authors.initials: F
authors.lastname: Vitale
authors.forename: Ilaria
authors.initials: I
authors.lastname: Fratoddi
authors.forename: Chiara
authors.initials: C
authors.lastname: Battocchio
authors.forename: Emanuela
authors.initials: E
authors.lastname: Piscopiello
authors.forename: Leander
authors.initials: L
authors.lastname: Tapfer
authors.forename: Maria Vittoria
authors.initials: MV
authors.lastname: Russo
authors.forename: Giovanni
authors.initials: G
authors.lastname: Polzonetti
authors.forename: Cinzia
authors.initials: C
authors.lastname: Giannini