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- W2912141602 abstract "Chiral colloidal CdSe quantum dots (CdSe-QDs) functionalized with l- and d-cysteine were designed and used as new optical nanosensor for selective detection and measurement of l-morphine. The synthetic method of the l- and d-cysteine functionalized CdSe-QDs were described. The functionalized chiral CdSe-QDs were characterized by various techniques such as X-ray diffraction (XRD), high resolution transmission electron microscopy (HR-TEM), energy dispersive X-ray (EDX) analysis, photoluminescence (PL), ultraviolet-visible (UV–vis), circular dichroism (CD), and Fourier transform infrared (FT-IR) spectroscopies. It was found that the fluorescence intensities of l- and d-cysteine functionalized CdSe-QDs were quenched by adding d-methamphetamine and l-morphine to them, respectively. But, the interaction between d-cysteine functionalized CdSe-QDs and l-morphine was more efficient exhibiting a detection limit of 0.06 μM and resulted in more fluorescence quenching of CdSe-QDs. The extent of fluorescence quenching depended on the concentration of l-morphine and d-methamphetamine according to the Stern-Volmer equation. Thus, the prepared chiral CdSe-QDs can be used as simple, quick, inexpensive, and selective nanosensor for practical detection of l-morphine." @default.
- W2912141602 created "2019-02-21" @default.
- W2912141602 creator A5047126516 @default.
- W2912141602 creator A5087694548 @default.
- W2912141602 date "2019-05-01" @default.
- W2912141602 modified "2023-09-27" @default.
- W2912141602 title "Chiral colloidal CdSe quantum dots functionalized with cysteine molecules: New optical nanosensor for selective detection and measurement of morphine" @default.
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- W2912141602 doi "https://doi.org/10.1016/j.colsurfa.2019.02.037" @default.
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