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• W4313458515 endingPage "101341" @default.
• W4313458515 startingPage "101341" @default.
• W4313458515 abstract "A time-controlled synthesis strategy for luminescent copper nanoclusters (CuNCs) was adopted via a two-step process. First, non-emissive copper nanoparticles (CuNPs) were formed by reducing copper salt with ascorbic acid (AA), and then the CuNPs were converted into green (G-CuNCs, λem = 520 nm) and blue emissive CuNCs (B–CuNCs, λem = 440 nm) after time-controlled treatment (2 h and 43 h) with mercaptopropionic acid (MPA). Transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) analysis unambiguously demonstrate the etching of CuNPs with the reduction of core size (from 6.09 nm for CuNPs to 2.67 nm and 1.92 nm for G-CuNCs and B–CuNCs, respectively) and a simultaneous lowering of the contribution of the +2 oxidation state of Cu species. Moreover, B–CuNCs showed selectivity and sensitivity towards Fe3+ and glutathione (GSH) via fluorescence (Fl) turn-off-on mechanism; the limit of detections (LODs) for respective analytes were 6.2 nM and 281 nM. The Fl turn-off mechanism by Fe3+ involves both static and dynamic quenching processes, whereas restoration of the Fl intensity of B–CuNCs was triggered by the GSH-induced reduction of Fe3+ to Fe2+ and subsequent release of Fe3+ from the surface of B–CuNCs. A logic gate was constructed based on the Fl response of the B–CuNCs toward the analytes. Finally, the synthesized B–CuNCs and G-CuNCs were employed for white light emission (WLE) with Commission Internationale d'Eclairage (CIE) coordinates of (0.33, 0.32) with the aid of another red-emitting GSH-capped gold nanocluster (GSH-AuNCs)." @default.
• W4313458515 created "2023-01-06" @default.
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• W4313458515 date "2023-01-01" @default.
• W4313458515 modified "2023-09-25" @default.
• W4313458515 title "Mercaptopropionic acid-assisted synthesis of green and blue emissive copper nanoclusters for multimodal sensing, logic gate, and white light applications" @default.
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• W4313458515 doi "https://doi.org/10.1016/j.mtchem.2022.101341" @default.
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