Experimental and theoretical study of the complexation of Fe3+ and Cu2+ by l‑ascorbic acid in aqueous solution

Ritacca, Alessandra G.; Malacaria, Luana; Sicilia, Emilia; Furia, Emilia; Mazzone, Gloria

doi:10.1016/j.molliq.2022.118973

Cited by 9 publications

(6 citation statements)

References 36 publications

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“…On the other hand, the UV–vis absorption spectrum of F-CCDs and F-CCDs- l -AA was analyzed in Figure b and it was found that l -AA forms iron–ascorbate complexes with Fe 3+ . The strong complexation of AA with Fe 3+ in an aqueous solution has been previously confirmed . Therefore, Fe 3+ detaches from the surface of CCDs, and the fluorescence of CCDs is emitted, leading to a recovery of fluorescence.…”

Section: Resultsmentioning

confidence: 71%

Construction of a Chiral Fluorescent Probe for Tryptophan Enantiomers/Ascorbic Acid Identification

Guan

et al. 2023

ACS Appl. Mater. Interfaces

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Chiral recognition of amino acid enantiomers is critical in enhancing drug efficacy, detecting disease markers, and understanding physiological processes. Enantioselective fluorescent identification has gained attention among researchers due to its nontoxicity, easy synthesis, and biocompatibility. In this work, chiral fluorescent carbon dots (CCDs) were produced through a hydrothermal reaction followed by chiral modification. The fluorescent probe, Fe3+-CCDs (F-CCDs), was constructed by complexing Fe3+ with CCDs to differentiate between the enantiomers of tryptophan (Trp) and determine ascorbic acid (AA) through an “on–off–on” response. It is worth noting that l-Trp can greatly enhance the fluorescence of F-CCDs with a blue shift, whereas d-Trp does not have any effect on the fluorescence of F-CCDs. F-CCDs showed a low limit of detection (LOD) for l-Trp and l-AA, with an LOD of 3.98 and 6.28 μM, respectively. The chiral recognition mechanism of tryptophan enantiomers using F-CCDs was proposed based on the interaction force between the enantiomers and F-CCDs, as confirmed by UV–vis absorption spectroscopy and density functional theory calculations. The determination of l-AA by F-CCDs was also confirmed through the binding of l-AA to Fe3+ to release CCDs, as seen in UV–vis absorption spectra and time-resolved fluorescence decays. In addition, AND and OR gates were constructed based on the different responses of CCDs to Fe3+ and Fe3+-CCDs to l-Trp/d-Trp, demonstrating the significance of molecular-level logic gates in drug detection and clinical diagnosis.

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Section: Resultsmentioning

confidence: 71%

Construction of a Chiral Fluorescent Probe for Tryptophan Enantiomers/Ascorbic Acid Identification

Guan

et al. 2023

ACS Appl. Mater. Interfaces

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“…The high recovery rate of 1.0 M ascorbic acid seems to be because ascorbic acid forms a complex with Fe 3+ . 34 The complex is formed quickly because it proceeds simultaneously with the dissolution of the iron colloid, and ascorbic acid is a weak acid, resulting in little damage to exDNA. However, assuming exDNA recovery from environmental samples, if the sample water volume increases, the concentration ratio could decrease as well similar to that for 0.1 M HCl.…”

Section: Resultsmentioning

confidence: 99%

Highly sensitive detection and quantification of dissolved free extracellular DNA using colloid adsorption and foam concentration

Tamai

Ogura

Okuno

et al. 2023

Environ. Sci.: Water Res. Technol.

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“…where DHA is dehydroascorbic acid, Cu 2+ represents all species involving copper (II) ions including free Cu 2+ ions and CuOH + , CuCl + , and CuCl 2 as well as Cu 2+ complexes with ascorbic acid of different composition [34,55,56] etc. The secondary salt effect leading to the change in ascorbic acid dissociation degree can be neglected for two reasons.…”

Section: Effect Of the Nature And Concentration Of Background Electro...mentioning

confidence: 99%

“…An important aspect of both biochemical and analytical applications of ascorbic acid is their complexation with biologically and environmentally relevant cations including Cu 2+ , and such research has been started recently [33,34].…”

Section: Introductionmentioning

confidence: 99%

Copper (II)-Catalyzed Oxidation of Ascorbic Acid: Ionic Strength Effect and Analytical Use in Aqueous Solution

Murekhina

Yarullin

Sovina³

et al. 2022

Inorganics

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Copper is an important metal both in living organisms and in the industrial activity of humans, it is also a distributed water pollutant and a toxic agent capable of inducing acute and chronic health disorders. There are several fluorescent chemosensors for copper (II) determination in solutions; however, they are often difficult to synthesize and solvent-sensitive, requiring a non-aqueous medium. The present paper improves the known analytical technique for copper (II) ions, where the linear dependence between the ascorbic acid oxidation rate constant and copper (II) concentration is used. The limits of detection and quantification of the copper (II) analysis kinetic method are determined to be 82 nM and 275 nM, respectively. In addition, the selectivity of the chosen indicator reaction is shown: Cu2+ cations can be quantified in the presence of the 5–20 fold excess of Co2+, Ni2+, and Zn2+ ions. The La3+, Ce3+, and UO22+ ions also do not catalyze the ascorbic acid oxidation reaction. The effect of the concentration of the common background electrolytes is studied, the anomalous influence for chloride-containing salts is observed and discussed.

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Experimental and theoretical study of the complexation of Fe3+ and Cu2+ by l‑ascorbic acid in aqueous solution

Cited by 9 publications

References 36 publications

Construction of a Chiral Fluorescent Probe for Tryptophan Enantiomers/Ascorbic Acid Identification

Construction of a Chiral Fluorescent Probe for Tryptophan Enantiomers/Ascorbic Acid Identification

Highly sensitive detection and quantification of dissolved free extracellular DNA using colloid adsorption and foam concentration

Copper (II)-Catalyzed Oxidation of Ascorbic Acid: Ionic Strength Effect and Analytical Use in Aqueous Solution

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