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- W3042177570 endingPage "128811" @default.
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- W3042177570 abstract "This present work highlights the construction of new chemosensors based on polycyclic aromatic hydrocarbon (PAH) appended organosilocane which have been structurally characterized by various spectroscopic techniques such as IR, NMR, and mass spectrometry. The prepared chemosensors were found to be proficient for the detection of Sn 2+ and Cr 3+ ions with UV–Visible spectroscopy and Cu 2+ ion with fluorescence technique. The limit of detection for Sn 2+ , Cr 3+ and Cu 2+ ions turns out to be 5.74 ppb, 5.14 ppb and 0.55 ppm, respectively, as calculated by Benesi-Hildebrand plot and Stern Volmer graph. Moreover, biological applications like total antioxidant activity and cytotoxic studies of the prepared organosilocanes have been evaluated. Total antioxidant activity was of IC 50 0.06 ± 0.01 mM and 0.2 ± 0.01 mM, for compounds 3a and 3b, respectively. Interestingly, compound 3a has a noteworthy cytotoxic activity against SAF-1 cell line with EC50 of 4.07 ± 0.32 μM. Further immobilisation of compound 3a onto the surface of magnetic silica (Fe 3 O 4 @SiO 2 ) nanoparticles enhanced the properties of chemosensitivity for Sn 2+ ion and the limit of detection lowered to 0.1 ppb. The resultant nanoparticles have been characterized by physicochemical techniques such as FT-IR, XRD, EDX, FESEM and TGA. • PAH appended organosilocanes have been synthesized. • Organosilocanes have been used as sensors for detection of Sn 2+ , Cr 3+ and Cu 2+ ions. • The binding of metal ions was successfully proved by IR and NMR spectroscopy. • Excellent antioxidant capacity and cytotoxic activities were shown by the compounds. • Prepared magnetic silica nanoparticles revealed excellent limit of detection." @default.
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- W3042177570 date "2020-12-01" @default.
- W3042177570 modified "2023-09-27" @default.
- W3042177570 title "Polycyclic aromatic hydrocarbon functionalized organosilocanes based chemosensors: Synthesis, magnetic nanoparticles and biological application" @default.
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- W3042177570 doi "https://doi.org/10.1016/j.molstruc.2020.128811" @default.
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