Analytical methods for determination and sensing of fluoride in biotic and abiotic sources: a review

Shin

Bulletin Korean Chem Soc

2020

Section: Figurementioning

confidence: 99%

Fluorescent Fluoride Sensor Based on Indolizine Core Skeleton for Bioimaging

Shin

Bulletin Korean Chem Soc

2020

“…However, the over intake of fluoride can lead to excess mineralization within oganisms and cause gastric and kidney problems. Various analytical techniques have been developed for sensing fluoride [130], including the well-established electrochemical method [131,132], chromatography [133,134], and colorimetric and fluorogenic assays [135]. In the past decades, numerous fluorescent probes have been developed for fluoride based on different fluoride-participated processes, such as fluoride-induced Si−O or Si−C bond cleavage, H−F hydrogen bonding formation, and Lewis acid−base interactions [136,137,138].…”

Section: Mof-based Chemodosimeters For Ionsmentioning

confidence: 99%

Recent Progress in Metal–Organic Framework (MOF) Based Luminescent Chemodosimeters

et al. 2019

Metal–organic frameworks (MOFs), as a class of crystalline hybrid architectures, consist of metal ions and organic ligands and have displayed great potential in luminescent sensing applications due to their tunable structures and unique photophysical properties. Until now, many studies have been reported on the development of MOF-based luminescent sensors, which can be classified into two major categories: MOF chemosensors based on reversible host–guest interactions and MOF chemodosimeters based on the irreversible reactions between targets with a probe. In this review, we summarize the recently developed luminescent MOF-based chemodosimeters for various analytes, including H2S, HClO, biothiols, fluoride ions, redox-active biomolecules, Hg2+, and CN−. In addition, some remaining challenges and future perspectives in this area are also discussed.

“…Furthermore, fluoride ions have many military usages, including refining uranium and detecting nerve agents for instance sarin and soman. 10…”

Section: Introductionmentioning

confidence: 99%

Efficient Optical and UV–Vis Chemosensor Based on Chromo Probes–Polymeric Nanocomposite Hybrid for Selective Recognition of Fluoride Ions

et al. 2019

A novel colorimetric sensor based on the TiO2/poly(acrylamide-co-methylene bis acrylamide-co-2-(3-(4-nitro-phenyl)thioureido)ethyl methacrylate) nanocomposite was synthesized via a surface modification strategy; methacryloxypropyltrimethoxysilane was used to provide reactive vinyl groups on the surface of TiO2 nanoparticles for the successful surface polymerization of Am (acrylamide), MBA (methylenbisacrylamide), and NPhM (2-(3-(4-nitrophenyl)thioureido)ethyl methacrylate) components. The successful preparation of nanocomposites was confirmed using Fourier transform infrared, 1H NMR, 13C NMR, scanning electron microscopy, transmission electron microscopy, thermogravimetry analysis, and X-ray diffraction methods, and the sensing ability of the probe toward fluoride ions was investigated using naked-eye detection and UV–vis measurement. The interaction of the prepared polymeric nanocomposite with fluoride ions elicited a significant visible change in color from pale yellow to orange and was further affirmed by a clean interconversion of the two absorption bands at 330 and 485 nm. The selective binding ability of the polymeric nanocomposite towards fluoride over other anions, such as I–, Cl–, Br–, AcO–, H2PO4–, and H2SO4– was further explored; the prepared chemosensor could detect fluoride ions in acetonitrile with a detection limit of 3 μM.