8-Hydroxyquinoline-2-Carboxylic Acid as Possible Molybdophore: A Multi-Technique Approach to Define Its Chemical Speciation, Coordination and Sequestering Ability in Aqueous Solution
| العنوان: | 8-Hydroxyquinoline-2-Carboxylic Acid as Possible Molybdophore: A Multi-Technique Approach to Define Its Chemical Speciation, Coordination and Sequestering Ability in Aqueous Solution |
|---|---|
| المؤلفون: | Francesco Cacciola, Sofia Gama, Salvatore Cataldo, Katia Arena, Alberto Pettignano, Demetrio Milea, Silvio Sammartano, Francesco Crea, Giuseppe Brancato, Gabriele Lando, Concetta De Stefano, Winfried Plass, Luigi Mondello |
| المساهمون: | Arena K., Brancato G., Cacciola F., Crea F., Cataldo S., De Stefano C., Gama S., Lando G., Milea D., Mondello L., Pettignano A., Plass W., Sammartano S., Arena, K., Brancato, G., Cacciola, F., Crea, F., Cataldo, S., De Stefano, C., Gama, S., Lando, G., Milea, D., Mondello, L., Pettignano, A., Plass, W., Sammartano, S. |
| المصدر: | Biomolecules Volume 10 Issue 6 Biomolecules, Vol 10, Iss 930, p 930 (2020) |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Carboxylic acid, Inorganic chemistry, Potentiometric titration, lcsh:QR1-502, metal complexes, Molybdate, 010402 general chemistry, 01 natural sciences, Biochemistry, Ferric Compounds, chemical speciation, metallophores, molybdate, natural chelants, sequestration, stability constants, lcsh:Microbiology, Article, metal complexe, chemistry.chemical_compound, Settore CHIM/01 - Chimica Analitica, Molecular Biology, Voltammetry, Density Functional Theory, Settore CHIM/02 - Chimica Fisica, chemistry.chemical_classification, Molybdenum, Aqueous solution, metallophore, 010405 organic chemistry, Ligand, Water, humanities, 0104 chemical sciences, Solutions, chemistry, Hydroxyquinolines, natural chelant, Titration, Cyclic voltammetry |
| الوصف: | 8-hydroxyquinoline-2-carboxylic acid (8-HQA) has been found in high concentrations (0.5&ndash 5.0 mmol· dm&minus 3) in the gut of Noctuid larvae (and in a few other lepidopterans), in which it is proposed to act as a siderophore. Since it is known that many natural siderophores are also involved in the uptake and metabolism of other essential elements than iron, this study reports some results on the investigation of 8-HQA interactions with molybdate (MoO42&minus i.e., the main molybdenum form in aqueous environments), in order to understand the possible role of this ligand as molybdophore. A multi-technique approach has been adopted, in order to derive a comprehensive set of information necessary to assess the chemical speciation of the 8-HQA/MoO42&minus system, as well as the coordination behavior and the sequestering ability of 8-HQA towards molybdate. Chemical speciation studies have been performed in KCl(aq) at I = 0.2 mol· 3 and T = 298.15 K by ISE-H+ (glass electrode) potentiometric and UV/Vis spectrophotometric titrations. CV (Cyclic Voltammetry), DP-ASV (Differential Pulse-Anodic Stripping Voltammetry), ESI-MS experiments and quantum mechanical calculations have been also performed to derive information about the nature and possible structure of species formed. These results are also compared with those reported for the 8-HQA/Fe3+ system in terms of chemical speciation and sequestering ability of 8-HQA. |
| وصف الملف: | application/pdf |
| تدمد: | 2218-273X |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f7f3e2803d2e635845d3b1e58b1aba9Test https://pubmed.ncbi.nlm.nih.gov/32570991Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....2f7f3e2803d2e635845d3b1e58b1aba9 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 2218273X |
|---|