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RESEARCH PRODUCT
Gold Nanowired: A Linear (Au25)n Polymer from Au25 Molecular Clusters
Marco De NardiAlfonso ZoleoFangfang PanFlavio MaranSabrina AntonelloKari RissanenMarco RuzziDe-en JiangAlfonso Venzosubject
Materials sciencepolymerNanowireGeneral Physics and Astronomy02 engineering and technology010402 general chemistry01 natural sciencesparamagnetismCrystalParamagnetismAu25MonolayerCluster (physics)MoleculeGeneral Materials Scienceta116X-ray crystallographychemistry.chemical_classificationGeneral EngineeringPolymer021001 nanoscience & nanotechnology0104 chemical sciences3. Good healthCrystallographychemistryantiferromagnetic couplingX-ray crystallography0210 nano-technologygold nanoclustersdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-01-01 |