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Researchers synthesize a nanocluster of superfluorinated gold
Synthesis of AuNC stabilized by F27SH and crystallization of [Au25(SF27)18]0. a Cartoon representation of AuNC stabilized by F27SH thiol. For the sake of clarity, only 6 F27S-ligands have been reported; b schematic representation of crystal formation in solkane solution and colorimetric change upon their dissolution in PFO; c UV–Vis spectra of crude product in solkane and crystals redissolved in PFO; d, e STEM images of crude product showing the presence of small clusters and bigger AuNPs; f, g STEM images of redissolved crystals solution showing the homogeneous presence of small clusters. Credit: Nature Communications (2022). DOI: 10.1038/s41467-022-29966-2

The Department of Chemistry, Materials and Chemical Engineering "Giulio Natta" at the Politecnico di Milano and the University of Bologna have collaborated on the creation of a lab that has for the first time synthesised a substance. The project was published in a journal.

The metal clusters are an innovative class of very complex nanomaterial, characterized by ultra-small dimensions (<2nm)>

It is possible to obtain high-purity samples from the crystallization of metal nanoclusters, but it is not easy to control it. The Sincrotrone Elettra in Trieste has an X-ray facility that can be used to determine the atomic structure ofnanoclusters. The structural description of the most complex fluorinatednano-object has been reported.

The gold nanocluster is stable because of the many interactions between the fluorine atoms of the binder.

Thanks to the grant from the Region of Lombardy, the structure of these advanced nanomaterials will be studied at the Politecnico di Milano.

The chemistry department at the University of Bologna's "G. Ciamician" used quantum chemistry techniques to rationalize the interactions between the atoms.

The physicists from the Politecnico di Milano contributed to the study looking at the optical characteristics of thenanocluster.

More information: Claudia Pigliacelli et al, High-resolution crystal structure of a 20 kDa superfluorinated gold nanocluster, Nature Communications (2022). DOI: 10.1038/s41467-022-29966-2 Journal information: Nature Communications Provided by Politecnico Milano