Recognition of fluoride anions at low ppm level inside living cells and from fluorosis affected tooth and saliva samples

Ghosh, Pritam; Roy, Biswajit; Mukhopadhyay, Subhra Kanti; Banerjee, Priyabrata

doi:10.1039/c5ra01720c

Cited by 83 publications

(39 citation statements)

References 34 publications

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“…Keeping all these factors in our consideration for current research on supramolecular chemistry [4,8,[27][28][29][30][31] we are nowadays mostly focused on selective detection of F -like bio-relevant anions with Schiff base based chemoreceptor. Till date F -detection has been mainly carried out by urea, amide, and imidazolinium based chemoreceptor [32][33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Cell permeable fluorescent colorimetric Schiff base chemoreceptor for detecting F− in aqueous solvent

Chowdhury

Ghosh

Roy

et al. 2015

Sensors and Actuators B: Chemical

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Section: Introductionmentioning

confidence: 99%

Cell permeable fluorescent colorimetric Schiff base chemoreceptor for detecting F− in aqueous solvent

Chowdhury

Ghosh

Roy

et al. 2015

Sensors and Actuators B: Chemical

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“…4(a)). The -NH proton adjacent to the aromatic ring of the material has strong fluoride binding abilities, 33,34,[38][39][40][41] which affect the luminescent intensity of the material.…”

Section: Analytical Performances Of the Extractor (Fsg-pan)mentioning

confidence: 99%

“…33 However, its presence in excess amounts in the human body is responsible for ill-effects, like osteoporosis, osteoarthritis, fluorosis and immune system disruption. 34 Its luminescent properties henceforth also merit mention for trace level (0.94 -7.5 ppm) fluoride sensing. The earlier developed fluoride sensors mainly worked with one of the following strategies, such as anion-π interactions, hydrogen bonding, 35(a,b) irreversible cleavage of O-Si bond 36(a,b) and Lewis acid-base interaction.…”

Section: (A-d)mentioning

confidence: 99%

“…FSG-PAN contains a -NH proton in its molecular network, which is attackable by F -through hydrogen bonding, a recognized reaction pathway in F -sensing. 33,34,[38][39][40][41] …”

Section: (A-d)mentioning

confidence: 99%

“…4(b)) enhances the fluorescence intensity. 34 Adsorption isotherms. Plot of Ce (μmol g -1 ) vs. Ce/qe (g mL -1 ) and log Ce (mM) vs. log qe (μmol g -1 ) give two linear relationships (y = 7.784 × 10 -4 x + 2.8061; R 2 = 0.99535; SD = 0.051 and y = 0.82425x + 0.00958; R 2 = 0.98096; SD = 0.03191) (Fig.…”

Section: Analytical Performances Of the Extractor (Fsg-pan)mentioning

confidence: 99%

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Facile Synthesis of a Luminescent Material, PAN@{SiO2}n, Having a Simultaneous Binding Capacity of High and Low Oxidation States: HOMO and LUMO, Quantum-mechanical Descriptor of Break-through Capacity

et al. 2016

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A time-cost effective, chemically stable mesoporous resin (FSG-PAN), simultaneous binder of two different metal centers (both high (Cd(II)) and low (Tl(I)) oxidation states), has been synthesized by immobilizing azo-dye (1-(2-pyridylazo)-2-napthol: PAN) on functionalized silica gel (FSG). Its corresponding synthesized nano material possesses good luminescent properties, and has been utilized in fluoride sensing at trace levels (1.8 × 10 -6 -7.2 × 10 -6 M). The composition.·51H2O) and structure (tetrahedral) have been well assessed. Under the optimum extraction conditions, the soft extractor (ηFSG-PAN = 1.31 eV), FSG-PAN quantitatively extracts the soft metal centers Cd(II), followed by Tl(I) at its respective HOMO and LUMO by soft-soft interactions. The extractor possesses a high Brunauer-Emmett-Teller (BET) surface area (SABET) (374 m 2 g -1 ), high preconcentration factor (PF, 192), selective pore size and two kinds of break-through capacity (BTCHOMO, 945 μmol g -1 ; BTCLUMO, 120 μmol g -1 ). BTC is spelled out as a function of the electron density over the ligand binding site as analyzed from a DFT calculation.

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Polar and nonpolar iron (II) complexes of isatin hydrazone derivatives as effective catalysts in oxidation reactions and their antimicrobial and anticancer activities

El‐Sayed

Adam

2022

Applied Organom Chemis

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Two iron (II) complexes of various derivatives (polar with 5‐sodium sulfoante group and nonpolar with di‐tert butyl groups, HLSO3Na and HLDBu, respectively) of isatin hydrazones were synthesized within 1:2 molar ratios of Fe2+ ion to the isatin hydrazone ligand giving Fe (LSO3Na)2 and Fe (LDBu)2, respectively. The polar and nonpolar isatin hydrazone derivatives behaved as O,N,O‐tridentate pincer chelating agents with Fe2+ ions. The variation in polarity of the two Fe2+‐complexes controlled their catalytic action in the oxidation of alcohols using tBuOOH (tert‐butyl hydroperoxide). The polar catalyst showed more enhanced catalytic behavior than that of the nonpolar one. The optimized conditions for Fe (LDBu)2 was found to be better at 70°C after 4 h with 86% of benzaldehyde than that with Fe (LSO3Na)2 (at 90°C after 2 h with 84% of benzaldehyde). Their kinetic studies were used to derive the thermodynamic parameters of Ea and ΔG# for the catalytic processes.Biologically, based on their high reactivity toward some bacterial and fungal strains and some human cancer cell lines, the calf thymus‐DNA (ctDNA) interaction of the current compounds were studied. The nonpolar Fe2+‐complex (Fe (LDBu)2) assigned more reactivity with ctDNA more than that of the polar reagent (Fe (LSO3Na)2) and also more than that of their uncoordinated ligands depending on their lipophilicity. Their reactivities toward ctDNA was established spectrophotometrically and within the changes in the DNA solution viscosity. The binding strength was evaluated with the magnitudes of the binding constant (Kb = 3.03, 3.21, 9.79, and 11.51 × 108 mol−1 dm3 for HLDBu, HLSO3Na, Fe (LDBu)2, and Fe (LSO3Na)2, respectively), which supported by the Gibbs' free energy values −3.12, −31.42, −34.18, and −34.58 kJ mol−1, respectively.

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Recognition of fluoride anions at low ppm level inside living cells and from fluorosis affected tooth and saliva samples

Abstract: A simple Schiff base chemosensor 2-((2-(2,4-dinitro phenyl)hydrazono)methyl)-4-nitrophenol (L) has been developed as a colorimetric and fluorimetric ‘turn on’ sensor for fluoride (F−).

Cited by 83 publications

References 34 publications

Cell permeable fluorescent colorimetric Schiff base chemoreceptor for detecting F− in aqueous solvent

Cell permeable fluorescent colorimetric Schiff base chemoreceptor for detecting F− in aqueous solvent

Facile Synthesis of a Luminescent Material, PAN@{SiO2}n, Having a Simultaneous Binding Capacity of High and Low Oxidation States: HOMO and LUMO, Quantum-mechanical Descriptor of Break-through Capacity

Polar and nonpolar iron (II) complexes of isatin hydrazone derivatives as effective catalysts in oxidation reactions and their antimicrobial and anticancer activities

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