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 divided by 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.
Mono- and bi-functional arenethiols as surfactants for gold nanoparticles: synthesis and characterization / Floriana, Vitale; Fratoddi, Ilaria; Chiara, Battocchio; Emanuela, Piscopiello; Leander, Tapfer; Russo, Maria Vittoria; Giovanni, Polzonetti; Cinzia, Giannini. - In: NANOSCALE RESEARCH LETTERS. - ISSN 1931-7573. - STAMPA. - 6:1(2011), p. X1. [10.1186/1556-276x-6-103]
Mono- and bi-functional arenethiols as surfactants for gold nanoparticles: synthesis and characterization
FRATODDI, Ilaria;RUSSO, Maria Vittoria;
2011
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 divided by 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
