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• W3093935052 endingPage "119109" @default.
• W3093935052 startingPage "119109" @default.
• W3093935052 abstract "This study is aimed at developing sensing schemes without obtaining selective receptors. A series of simple carbocyanine dyes was synthesized, whose emission was quenched in water with formation of nanoparticles in the range of 20–100 nm. Fluorescence in near-IR region is “turned on” in the presence of a drug cation of middle molecular weight (400–700 Da) and sodium dodecyl sulfate (SDS), as well as anionic drugs and a cationic surfactant (cetyltrimethylammonium bromide, CTAB). Aggregates (clusters) up to 100–200 nm in size were detected using dynamic light scattering (DLS) and Rayleigh light scattering (RLS) techniques in the systems: cationic analyte–SDS, carbocyanine dye–CTAB, and in all brightly fluorescent ternary systems dye–surfactant–analyte. Small ions (<200 Da) incapable of multi-point binding do not form the aggregates or cause the emission enhancement. The “turn-on” signal is only observed at the surfactant submicellar concentrations insufficient to solubilize the dye nanoparticles. Based on these findings, we suggest a rapid and simple method for the detection of ≥4·10−5 mol/L of neomycin in urine. The proposed strategy paves the way for developing more selective methods." @default.
• W3093935052 created "2020-10-29" @default.
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• W3093935052 date "2021-02-01" @default.
• W3093935052 modified "2023-10-01" @default.
• W3093935052 title "Aggregation-based fluorescence amplification strategy: “turn-on” sensing of aminoglycosides using near-IR carbocyanine dyes and pre-micellar surfactants" @default.
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• W3093935052 doi "https://doi.org/10.1016/j.saa.2020.119109" @default.
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