Show simple item record

dc.contributor.authorBootharaju, Megalamane Siddaramappa
dc.contributor.authorJoshi, Chakra Prasad
dc.contributor.authorParida, Manas R.
dc.contributor.authorMohammed, Omar F.
dc.contributor.authorBakr, Osman
dc.date.accessioned2017-04-13T11:50:56Z
dc.date.available2017-04-13T11:50:56Z
dc.date.issued2015-11-27
dc.identifier.citationBootharaju MS, Joshi CP, Parida MR, Mohammed OF, Bakr OM (2015) Templated Atom-Precise Galvanic Synthesis and Structure Elucidation of a [Ag24Au(SR)18]−Nanocluster. Angewandte Chemie International Edition 55: 922–926. Available: http://dx.doi.org/10.1002/anie.201509381.
dc.identifier.issn1433-7851
dc.identifier.doi10.1002/anie.201509381
dc.identifier.doi10.1002/ange.201509381
dc.identifier.urihttp://hdl.handle.net/10754/623138
dc.description.abstractSynthesis of atom-precise alloy nanoclusters with uniform composition is challenging when the alloying atoms are similar in size (for example, Ag and Au). A galvanic exchange strategy has been devised to produce a compositionally uniform [Ag24Au(SR)18]- cluster (SR: thiolate) using a pure [Ag25(SR)18]- cluster as a template. Conversely, the direct synthesis of Ag24Au cluster leads to a mixture of [Ag25-xAux(SR)18]-, x=1-8. Mass spectrometry and crystallography of [Ag24Au(SR)18]- reveal the presence of the Au heteroatom at the Ag25 center, forming Ag24Au. The successful exchange of the central Ag of Ag25 with Au causes perturbations in the Ag25 crystal structure, which are reflected in the absorption, luminescence, and ambient stability of the particle. These properties are compared with those of Ag25 and Ag24Pd clusters with same ligand and structural framework, providing new insights into the modulation of cluster properties with dopants at the single-atom level.
dc.description.sponsorshipKAUST
dc.publisherWiley-Blackwell
dc.subjectAlloys
dc.subjectGalvanic exchange
dc.subjectGold
dc.subjectSilver
dc.subjectStructure determination
dc.titleTemplated Atom-Precise Galvanic Synthesis and Structure Elucidation of a [Ag 24 Au(SR) 18 ] − Nanocluster
dc.typeArticle
dc.contributor.departmentChemical Science Program
dc.contributor.departmentFunctional Nanomaterials Lab (FuNL)
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentUltrafast Laser Spectroscopy and Four-dimensional Electron Imaging Research Group
dc.identifier.journalAngewandte Chemie International Edition
kaust.personBootharaju, Megalamane Siddaramappa
kaust.personJoshi, Chakra Prasad
kaust.personParida, Manas R.
kaust.personMohammed, Omar F.
kaust.personBakr, Osman M.
dc.date.published-online2015-11-27
dc.date.published-print2016-01-18


This item appears in the following Collection(s)

Show simple item record