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- W3118856768 abstract "Using fluorescence quenching of quantum dot nano-particles is a promising technique for determination of chemical species. In most cases these measurements have been done in liquid phase. Immobilization of quantum dot nano-particles on a solid bed offer easier separation, preconcentation, washing the interferences and quick fluorescence measurements of different analyts so that the quantum dots are reusable again. In this study three different approaches for quantum dot immobilization on a glass surface including sol-gel process, thiol-metal affinity and amide bond formation were compared in the time, temperature, atmosphere, solvent availability, pH, efficiency and tunability of attachment yield. The amide bonding was found the best strategy with 24 h reaction time, ambient temperature, air atmosphere, pH=10, no need for anhydrous solvent, highest fluorescence intensity (more than 50% of total intensities) , tunability of attachment with reproducible data (RSD<5.0%), cheap and convenient technique for immobilization of nano-particles on the glass surface." @default.
- W3118856768 created "2021-01-18" @default.
- W3118856768 creator A5073418592 @default.
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- W3118856768 date "2021-04-01" @default.
- W3118856768 modified "2023-10-16" @default.
- W3118856768 title "A comparative study of different techniques for quantum dot nano-particles immobilization on glass surface for fabrication of solid phase fluorescence opto-sensors" @default.
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- W3118856768 doi "https://doi.org/10.1016/j.surfin.2020.100907" @default.
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