Journal of the American Chemical Society · 2016 · 292 citations · 40 references
Natural SciencesChemistryPhysicsNanomaterialsNanotechnologyTheoretical ChemistryDensity Functional TheoryMolecular StructureMolecular SymmetryNanomaterial CharacterizationSurface Functionalization Of NanomaterialsThermodynamics Of NanomaterialsGold NanostructuresIsomerization ReactionsLigand-stabilized ClustersNanocluster ChemistryNoble Metal NanoclustersNoble Metal NanostructuresThermodynamics Of NanoclustersThiolate-protected Gold Clusters
Understanding the isomerism phenomenon at the nanoscale is a challenging task because of the prerequisites of precise composition and structural information on nanoparticles. Herein, we report the ligand-induced, thermally reversible isomerization between two thiolate-protected 28-gold-atom nanoclusters, i.e. Au28(S-c-C6H11)20 (where -c-C6H11 = cyclohexyl) and Au28(SPh-(t)Bu)20 (where -Ph-(t)Bu = 4-tert-butylphenyl). The intriguing ligand effect in dictating the stability of the two Au28(SR)20 structures is further investigated via dispersion-corrected density functional theory calculations.
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