Emissive metal nanoclusters have received considerable research attention owing to their low toxicity,low cost,and good biocompatibility,but the preparation of Cu nanoclusters assemblies with strong emission behavior is a large challenge.Chiral ligand D-penicillamine was used as a reactant to construct intense emission of luminescent Cu nanoclusters assembly by"one-pot"method.They have been characterized by multiple techniques including FT-IR specta,thermogravimetric analysis,X-ray photoelectron spectra,X-ray diffraction pattern,scanning electron microscopy(SEM),transmission e-lectron microscopy(TEM),photoluminescence spectra,and cellular imaging.The results show that Cu nanoclusters assemblies in suspension solution and solid state show very strong emission with the abso-lute photoluminescence quantum yield as high as 30.4%.Moreover,emissive Cu nanoclusters assem-blies possess very low cellular toxicity and can be used as cellular imaging as well as the temperature-dependent intracellular imaging agent in HepG2 cells.The application exploration on cellular imaging of Cu nanoclusters assembly with strong emission behavior provides significant references for their ap-plications in other areas.
Cu nanoclusters assemblyself-assemblenano synthesisemissioncellular imagingtemperature sensing
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