title: Gold nanowired: a linear (Au25)(n) polymer from Au25 molecular clusters.
abstract: Au25(SR)18 has provided fundamental insights into the properties of clusters protected by monolayers of thiolated ligands (SR). Because of its ultrasmall core, 1 nm, Au25(SR)18 displays molecular behavior. We prepared a Au25 cluster capped by n-butanethiolates (SBu), obtained its structure by single-crystal X-ray crystallography, and studied its properties both experimentally and theoretically. Whereas in solution Au25(SBu)18(0) is a paramagnetic molecule, in the crystal it becomes a linear polymer of Au25 clusters connected via single Au-Au bonds and stabilized by proper orientation of clusters and interdigitation of ligands. At low temperature, [Au25(SBu)18(0)]n has a nonmagnetic ground state and can be described as a one-dimensional antiferromagnetic system. These findings provide a breakthrough into the properties and possible solid-state applications of molecular gold nanowires.
authors.affiliation: Department of Chemistry, University of Padova , Via Marzolo 1, 35131 Padova, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: De Nardi
authors.forename: Sabrina
authors.initials: S
authors.lastname: Antonello
authors.forename: De-en
authors.initials: DE
authors.lastname: Jiang
authors.forename: Fangfang
authors.initials: F
authors.lastname: Pan
authors.forename: Kari
authors.initials: K
authors.lastname: Rissanen
authors.forename: Marco
authors.initials: M
authors.lastname: Ruzzi
authors.forename: Alfonso
authors.initials: A
authors.lastname: Venzo
authors.forename: Alfonso
authors.initials: A
authors.lastname: Zoleo
authors.forename: Flavio
authors.initials: F
authors.lastname: Maran