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• W3147236557 endingPage "122334" @default.
• W3147236557 startingPage "122334" @default.
• W3147236557 abstract "A composite fluorescent nanoprobe based on metal enhanced fluorescence (MEF) effect of gelatin-coated silver nanoparticles (AgNPs@gel) was developed for selective and sensitive detection of dopamine (DA). The characteristic fluorescence of Tb(III) was using as the detection signal and AgNPs@gel served as substrates of the MEF. Gelatin with rich amine and carboxylic groups was used not only as a co-ligand of Tb(III) complex, but also as a bridging substance and a spacing material for improving the MEF of AgNPs@gel on the intrinsic luminescent intensity of Tb(III). Under the optimal conditions, the increment of the fluorescence intensity (measured at 307/544 nm as excitation/emission wavelength) of the system increased linearly with the concentration of DA in the range of 0.80-100 nM (R2 = 0.9937) and 100-1000 nM (R2 = 0.9978). The fluorescent probe greatly improved Tb(III) luminescence, which paved the way for sensitive detection with a low detection limit of 0.54 nM. It also showed good selectivity among other neurotransmitters. This work was successfully applied to the determination of DA in human serum samples with recoveries ranging from 99.8 to 102.2%. We believe that the Tb(III)-DA-AgNPs@gel composite fluorescent probe can be developed as a new approach for DA detection." @default.
• W3147236557 created "2021-04-13" @default.
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• W3147236557 date "2021-08-01" @default.
• W3147236557 modified "2023-10-09" @default.
• W3147236557 title "Enhanced Tb(III) fluorescence on gelatin-coated silver nanoparticles in dopamine detection" @default.
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• W3147236557 doi "https://doi.org/10.1016/j.talanta.2021.122334" @default.
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• W3147236557 hasPublicationYear "2021" @default.
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