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- W3119162209 abstract "The quantification of silver nanoparticles and Ag+ contamination in the aquatic ecosystem has attracted considerable interest. Benzoimidazolyl-cyanovinylene (1) was synthesized as an aggregation-induced emission fluorophore, and a fluorescent peptidyl probe (2 and 3) bearing this fluorophore was developed. The fluorescent peptidyl probes coordinated with Ag+ selectively among various metal ions, leading to a ratiometric response to Ag+ in pure aqueous solutions. Furthermore, an “in situ” protocol was developed to quantify AgNPs using 2 with H2O2 as an oxidizing reagent. The fluorescent detection method for Ag+ and AgNPs showed promising detection properties such as high selectivity, high sensitivity, fast response, visible light excitation, well-operations in pure aqueous solution, and large fluorescent signal change. The detection limits of Ag+ (0.64 ppb) and AgNPs (1.1 ppb) were significantly low. According to the binding mode study, Ag+ induced the formation of a 2:1 complex between 2 and Ag+ and the chirality of the peptide part of the probe was not critical for this process. The formation of aggregates of the probe triggered by Ag+ from AgNPs induced a significant change in fluorescence. Furthermore, the amounts of spiked AgNPs in groundwater and tap water were quantified using the fluorescent detection method with 2." @default.
- W3119162209 created "2021-01-18" @default.
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- W3119162209 date "2021-06-01" @default.
- W3119162209 modified "2023-10-09" @default.
- W3119162209 title "Ratiometric fluorescent detection of silver nanoparticles in aqueous samples using peptide-based fluorogenic probes with aggregation-induced emission characteristics" @default.
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- W3119162209 doi "https://doi.org/10.1016/j.jhazmat.2021.125041" @default.
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