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dc.contributor.authorAljuhani, Maha A.
dc.contributor.authorBootharaju, Megalamane Siddaramappa
dc.contributor.authorSinatra, Lutfan
dc.contributor.authorBasset, Jean-Marie
dc.contributor.authorMohammed, Omar F.
dc.contributor.authorBakr, Osman
dc.date.accessioned2017-05-31T11:23:13Z
dc.date.available2017-05-31T11:23:13Z
dc.date.issued2016-12-17
dc.identifier.citationAljuhani MA, Bootharaju MS, Sinatra L, Basset J-M, Mohammed OF, et al. (2017) Synthesis and Optical Properties of a Dithiolate/Phosphine-Protected Au28 Nanocluster. The Journal of Physical Chemistry C. Available: http://dx.doi.org/10.1021/acs.jpcc.6b10205.
dc.identifier.issn1932-7447
dc.identifier.issn1932-7455
dc.identifier.doi10.1021/acs.jpcc.6b10205
dc.identifier.urihttp://hdl.handle.net/10754/623917
dc.description.abstractWhile monothiols and simple phosphines are commonly exploited for size-controlled synthesis of atomically precise gold nanoclusters (NCs), dithiols or dithiol-phosphine combinations are seldom applied. Herein, we used a dithiol (benzene-1,3-dithiol, BDT) and a phosphine (triphenylphosphine, TPP) together as ligands and synthesized an atomically precise gold NC with the formula [Au28(BDT)4(TPP)9]2+. This NC exhibited multiple absorption features and a charge of +2, which are distinctly different from the reported all-thiolated [Au28(SR)20]0 NC (SR: monothiolate). The composition of [Au28(BDT)4(TPP)9]2+ NC was deduced from high-resolution electrospray ionization mass spectrometry (ESI MS) and it was further corroborated by thermogravimetric analysis (TGA). Differential pulse voltammetry (DPV) revealed a HOMO–LUMO gap of 1.27 eV, which is in good agreement with the energy gap of 1.3 eV obtained from its UV–vis spectrum. The successful synthesis of atomically precise, dithiol-protected Au28 NC would stimulate theoretical and experimental research into bidentate ligands as a new path for expanding the library of different metal NCs, which have so far been dominated by monodentate thiols.
dc.description.sponsorshipThe work reported here was supported by KAUST.
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttp://pubs.acs.org/doi/full/10.1021/acs.jpcc.6b10205
dc.titleSynthesis and Optical Properties of a Dithiolate/Phosphine-Protected Au28 Nanocluster
dc.typeArticle
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.identifier.journalThe Journal of Physical Chemistry C
kaust.personAljuhani, Maha A.
kaust.personBootharaju, Megalamane Siddaramappa
kaust.personSinatra, Lutfan
kaust.personBasset, Jean-Marie
kaust.personMohammed, Omar F.
kaust.personBakr, Osman


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