4 May 2018 The glutathione-capped gold nanoclusters based on doping zinc ion with aggregation-induced emission enhancement
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Abstract
Heavy-metal-containing quantum dots (QDs), such as CdSe-based quantum dots (QDs) have been applied to lightconversion nano-phosphors due to tunable emission and pure colors. Unfortunately, those QDs involve toxic elements and synthesize in a hazardous halogenated solvent. Therefore, Eco-friendly gold nano-clusters (AuNCs@GSH) in solution phase have gained much attention for promising applications in biophotonics. For the first time, we explore the feasibility of aqueous-solution-processed AuNCs@GSH as luminescent species for promising applications in "green" luminescent solar concentrators (LSCs) by investigating their photophysical properties. Due to ligand-to-metal chargetransfer (LMCT) state, we found that such "green" LSCs formed by Zn-AuNCs@GSH dispersed in a polymer matrix exhibit large Stokes shift and small scattering losses. Compared to AuNCs@GSH, the Zn-AuNCs@GSH dispersed in a polymer matrix could suppress non-radiative recombination rates, inducing the enhancement of luminescence and the increase of PL-QY from 2% to 40%.
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Kun-BIin Cai, Kun-BIin Cai, Hsiu-Ying Huang, Hsiu-Ying Huang, Li-Yun Chang, Li-Yun Chang, Chi-Tsu Yuan , Chi-Tsu Yuan , } "The glutathione-capped gold nanoclusters based on doping zinc ion with aggregation-induced emission enhancement", Proc. SPIE 10672, Nanophotonics VII, 106723V (4 May 2018); doi: 10.1117/12.2307338; https://doi.org/10.1117/12.2307338
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