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    Gold Doping of Silver Nanoclusters: A 26-Fold Enhancement in the Luminescence Quantum Yield

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    Type
    Article
    Authors
    Soldan, Giada cc
    Aljuhani, Maha A. cc
    Bootharaju, Megalamane Siddaramappa cc
    AbdulHalim, Lina G. cc
    Parida, Manas R. cc
    Emwas, Abdul-Hamid M.
    Mohammed, Omar F. cc
    Bakr, Osman cc
    KAUST Department
    Chemical Engineering Program
    Chemical Science Program
    Functional Nanomaterials Lab (FuNL)
    Imaging and Characterization Core Lab
    KAUST Catalysis Center (KCC)
    KAUST Solar Center (KSC)
    Material Science and Engineering Program
    NMR
    Physical Science and Engineering (PSE) Division
    Ultrafast Laser Spectroscopy and Four-dimensional Electron Imaging Research Group
    Date
    2016-04-06
    Online Publication Date
    2016-04-06
    Print Publication Date
    2016-05-04
    Permanent link to this record
    http://hdl.handle.net/10754/623141
    
    Metadata
    Show full item record
    Abstract
    A high quantum yield (QY) of photoluminescence (PL) in nanomaterials is necessary for a wide range of applications. Unfortunately, the weak PL and moderate stability of atomically precise silver nanoclusters (NCs) suppress their utility. Herein, we accomplished a ≥26-fold PL QY enhancement of the Ag29(BDT)12(TPP)4 cluster (BDT: 1,3-benzenedithiol; TPP: triphenylphosphine) by doping with a discrete number of Au atoms, producing Ag29-xAux(BDT)12(TPP)4, x=1-5. The Au-doped clusters exhibit an enhanced stability and an intense red emission around 660nm. Single-crystal XRD, mass spectrometry, optical, and NMR spectroscopy shed light on the PL enhancement mechanism and the probable locations of the Au dopants within the cluster.
    Citation
    Soldan G, Aljuhani MA, Bootharaju MS, AbdulHalim LG, Parida MR, et al. (2016) Gold Doping of Silver Nanoclusters: A 26-Fold Enhancement in the Luminescence Quantum Yield. Angewandte Chemie International Edition 55: 5749–5753. Available: http://dx.doi.org/10.1002/anie.201600267.
    Sponsors
    Financial support for this work was provided by KAUST. Part of this work was by Saudi Arabia Basic Industries Corporation (SABIC) grants RGC/3/2470-01 and GIF/5/1830-01.
    Publisher
    Wiley
    Journal
    Angewandte Chemie
    DOI
    10.1002/anie.201600267
    10.1002/ange.201600267
    ae974a485f413a2113503eed53cd6c53
    10.1002/anie.201600267
    Scopus Count
    Collections
    Articles; Imaging and Characterization Core Lab; Physical Science and Engineering (PSE) Division; Chemical Science Program; Chemical Engineering Program; Material Science and Engineering Program; KAUST Catalysis Center (KCC); KAUST Solar Center (KSC)

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