首页|Photoluminescence turn-off based dual analytes (Hg2+ and Pb2+) sensor in aqueous medium using 3-marcaptoproponic acid protected Mn2+ doped ZnSe quantum dots
Photoluminescence turn-off based dual analytes (Hg2+ and Pb2+) sensor in aqueous medium using 3-marcaptoproponic acid protected Mn2+ doped ZnSe quantum dots
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NSTL
Elsevier
Water dispersible 3-marcaptoproponic acid protected Mn@ZnSe QDs were applied for sensing hazardous mercury and lead ions, which acts as an acceptor for metal ions due to the strong interaction between the metal ions and thiol group (-SH). The photoluminescence (PL) intensity of Mn@ZnSe QDs was strongly quenched with Hg2+ and Pb2+ (0-100 mu L). The average PL lifetime of Mn@ZnSe was shortened with Hg2+ and Pb2+ concentrations, whereas increased with initial Pb2+ concentrations. A filter paper-based sensor was also prepared and successfully tested for sensing via colorimetric and fluorometric detection methods. The system provided a new possibility for dual response ions detection in real samples.
NSTL
Elsevier
