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- W4313252570 abstract "New fluorescent polymeric sensors containing in situ photogenerated gold nanoparticles (Au NPs) and fluorescein-based copolymers are reported. They are tested as efficient fluorescent chemosensors for the sensitive detection of toxic divalent metal ions, such as Co2+, Cu2+, Cd2+, (UO2)2+, Pb2+, Zn2+and Hg2+. Their fluorescence quenching process depends on the concentration of metal cations and is comparatively analyzed for both the starting copolymers and the corresponding hybrid materials. Thus, the best results are recorded for uranyl (4 × 10-6 M) and copper ions (16 × 10−6 M), respectively. The detection limits of the investigated hybrid materials are lower by an order of magnitude compared to the starting copolymers, while the fluorescence quenching mechanism mainly occurred by a dynamic process, following a linear Stern-Volmer relationship. Thus, the report fundamentally confirms the influence of small amounts of Au NP (2 wt%) on the improved sensitivity of the final fluorescent sensors." @default.
- W4313252570 created "2023-01-06" @default.
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- W4313252570 date "2023-04-01" @default.
- W4313252570 modified "2023-10-17" @default.
- W4313252570 title "Increasing detection sensitivity of fluorescent polymeric sensors containing fluorescein derivatives by Au NPs" @default.
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- W4313252570 doi "https://doi.org/10.1016/j.saa.2022.122279" @default.
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