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- Title
Gold Doping of Silver Nanoclusters: A 26-Fold Enhancement in the Luminescence Quantum Yield.
- Authors
Soldan, Giada; Aljuhani, Maha A.; Bootharaju, Megalamane S.; AbdulHalim, Lina G.; Parida, Manas R.; Emwas, Abdul ‐ Hamid; Mohammed, Omar F.; Bakr, Osman M.
- 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− xAu x(BDT)12(TPP)4, x=1-5. The Au-doped clusters exhibit an enhanced stability and an intense red emission around 660 nm. 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.
- Subjects
NANOSTRUCTURED materials; DOPING agents (Chemistry); PHOTOLUMINESCENCE; TRIPHENYLPHOSPHINE; MASS spectrometry; SPECTROMETRY
- Publication
Angewandte Chemie, 2016, Vol 128, Issue 19, p5843
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201600267