4 May 2018 One-pot synthesis red emission of photoluminescent silane capped gold nanoclusters
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Abstract
The CdSe-based quantum dots (QDs) have been applied to light-conversion nano-phosphors due to tunable emission and pure colors. However, these cadmium-containing QDs was strongly toxic and synthesized in a hazardous solvent. In addition, conventional QD nano-phosphors with a small Stokes shift suffered from reabsorption losses and aggregation-induced photoluminescence (PL) quenching in the solid state. Therefore, there is a need to develop nanophosphors with a large Stokes shift. Here, we demonstrate one-pot synthesis of gold nanoclusters (AuNCs) using 3- aminopropyltrimethoxysilane (APS) and glutathione as protection ligand with a large Stokes shift. The gold nanoclusters with a large Stokes shift can mitigate the aggregation-induced PL quenching and reabsorption losses, which would be potential candidates for "green" nano-phosphors.
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H. Y. Huang, L. Y. Chang, C. T. Yuan, "One-pot synthesis red emission of photoluminescent silane capped gold nanoclusters ", Proc. SPIE 10672, Nanophotonics VII, 106723T (4 May 2018); doi: 10.1117/12.2307329; https://doi.org/10.1117/12.2307329
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