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Kawondera R, Bonechi M, Maccioni I, Giurlani W, Salzillo T, Venuti E, Mishra D, Fontanesi C, Innocenti M, Mehlana G, Mtangi W. Chiral "doped" MOFs: an electrochemical and theoretical integrated study. Front Chem 2023; 11:1215619. [PMID: 37614707 PMCID: PMC10442718 DOI: 10.3389/fchem.2023.1215619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 07/27/2023] [Indexed: 08/25/2023] Open
Abstract
This work reports on the electrochemical behaviour of Fe and Zn based metal-organic framework (MOF) compounds, which are "doped" with chiral molecules, namely: cysteine and camphor sulfonic acid. Their electrochemical behaviour was thoroughly investigated via "solid-state" electrochemical measurements, exploiting an "ad hoc" tailored experimental set-up: a paste obtained by carefully mixing the MOF with graphite powder is deposited on a glassy carbon (GC) surface. The latter serves as the working electrode (WE) in cyclic voltammetry (CV) measurements. Infrared (IR), X-ray diffraction (XRD) and absorbance (UV-Vis) techniques are exploited for a further characterization of the MOFs' structural and electronic properties. The experimental results are then compared with DFT based quantum mechanical calculations. The electronic and structural properties of the MOFs synthesized in this study depend mainly on the type of metal center, and to a minor extent on the chemical nature of the dopant.
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Affiliation(s)
- Rufaro Kawondera
- Institute of Materials Science, Processing and Engineering Technology, Chinhoyi University of Technology, Chinhoyi, Zimbabwe
| | - Marco Bonechi
- Department of Chemistry, University of Firenze, Firenze, Italy
| | - Irene Maccioni
- Department of Chemistry, University of Firenze, Firenze, Italy
| | - Walter Giurlani
- Department of Chemistry, University of Firenze, Firenze, Italy
- National Interuniversity Consortium of Materials Science and Technology (INSTM), Firenze, Italy
| | - Tommaso Salzillo
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Bologna, Italy
| | - Elisabetta Venuti
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Bologna, Italy
| | - Debabrata Mishra
- Department of Physics and Astrophysics, University of Delhi, New Delhi, India
| | - Claudio Fontanesi
- National Interuniversity Consortium of Materials Science and Technology (INSTM), Firenze, Italy
- Department of Engineering “Enzo Ferrari” (DIEF), University of Modena, Modena, Italy
| | - Massimo Innocenti
- Department of Chemistry, University of Firenze, Firenze, Italy
- National Interuniversity Consortium of Materials Science and Technology (INSTM), Firenze, Italy
- Center for Colloid and Surface Science (CSGI), Florence, Italy
| | - Gift Mehlana
- Department of Chemical Sciences, Midlands State University, Gweru, Zimbabwe
| | - Wilbert Mtangi
- Institute of Materials Science, Processing and Engineering Technology, Chinhoyi University of Technology, Chinhoyi, Zimbabwe
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Bonechi M, Giurlani W, Innocenti M, Pasini D, Mishra S, Giovanardi R, Fontanesi C. On the Dynamics of the Carbon-Bromine Bond Dissociation in the 1-Bromo-2-Methylnaphthalene Radical Anion. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27144539. [PMID: 35889412 PMCID: PMC9319363 DOI: 10.3390/molecules27144539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 07/08/2022] [Accepted: 07/12/2022] [Indexed: 11/16/2022]
Abstract
This paper studies the mechanism of electrochemically induced carbon-bromine dissociation in 1-Br-2-methylnaphalene in the reduction regime. In particular, the bond dissociation of the relevant radical anion is disassembled at a molecular level, exploiting quantum mechanical calculations including steady-state, equilibrium and dissociation dynamics via dynamic reaction coordinate (DRC) calculations. DRC is a molecular-dynamic-based calculation relying on an ab initio potential surface. This is to achieve a detailed picture of the dissociation process in an elementary molecular detail. From a thermodynamic point of view, all the reaction paths examined are energetically feasible. The obtained results suggest that the carbon halogen bond dissociates following the first electron uptake follow a stepwise mechanism. Indeed, the formation of the bromide anion and an organic radical occurs. The latter reacts to form a binaphthalene intrinsically chiral dimer. This paper is respectfully dedicated to Professors Anny Jutand and Christian Amatore for their outstanding contribution in the field of electrochemical catalysis and electrosynthesis.
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Affiliation(s)
- Marco Bonechi
- Department of Chemistry “Ugo Schiff”, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy; (M.B.); (W.G.)
| | - Walter Giurlani
- Department of Chemistry “Ugo Schiff”, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy; (M.B.); (W.G.)
| | - Massimo Innocenti
- Department of Chemistry “Ugo Schiff”, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy; (M.B.); (W.G.)
- National Interuniversity Consortium of Materials Science and Technology (INSTM), Via G. Giusti 9, 50121 Firenze, Italy
- Center for Colloid and Surface Science (CSGI), Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
- Correspondence: (M.I.); (C.F.)
| | - Dario Pasini
- Department of Chemistry, University of Pavia, Via Taramelli 10, 27100 Pavia, Italy;
| | - Suryakant Mishra
- Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA;
| | - Roberto Giovanardi
- Department of Engineering “Enzo Ferrari” (DIEF), University of Modena, Via Vivarelli 10, 41125 Modena, Italy;
| | - Claudio Fontanesi
- National Interuniversity Consortium of Materials Science and Technology (INSTM), Via G. Giusti 9, 50121 Firenze, Italy
- Department of Engineering “Enzo Ferrari” (DIEF), University of Modena, Via Vivarelli 10, 41125 Modena, Italy;
- Correspondence: (M.I.); (C.F.)
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Bonechi M, Giurlani W, Stefani A, Marchetti A, Innocenti M, Fontanesi C. Resorcinol Electropolymerization process obtained via Electrochemical Oxidation. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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