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Xu FY, Zhou Y, Zhang T, Zeng ZY, Chen XR, Geng HY. An ab initio study of two-dimensional anisotropic monolayers ScXY (X = S and Se; Y = Cl and Br) for photocatalytic water splitting applications with high carrier mobilities. Phys Chem Chem Phys 2022; 24:3770-3779. [PMID: 35081609 DOI: 10.1039/d1cp05369h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Recently, metal oxyhalides have been broadly studied due to their hierarchical structures and promising functionalities. Herein, a thorough study of newly modeled monolayers ScXY (X = S and Se; Y = Cl and Br), a class of derivates of ScOBr monolayers, was conducted using first-principles calculations. We theoretically confirm that these ScXY monolayers are mechanically, dynamically, and thermally stable. Young's modulus and Poisson's ratio calculated for all these ScXY monolayers obviously exhibit anisotropic properties. All these monolayers are indirect-gap semiconductors with bandgaps in the range of 2.35-3.18 eV, and their conduction band minimum (CBM) and valence band maximum (VBM) can straddle the reduction and oxidation potential of water very well, respectively. Particularly, ScSeCl and ScSeBr monolayers have the most propitious bandgaps and band alignments to be used as promising photocatalysts, and the predicted carrier mobility is much larger than that of many other two-dimensional materials. Moreover, the predicted anisotropic carrier mobilities and indirect bandgaps will diminish the recombination and facilitate the migration of photo-generated electron and hole pairs. Moreover, biaxial strain (-5% to 5%) effects on the band alignments and bandgaps are discussed. Our findings highlight that ScSeCl and ScSeBr monolayers are envisioned to act as promising photocatalytic and photoelectronic materials with anisotropic ultrahigh carrier mobilities.
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Affiliation(s)
- Fei-Yang Xu
- Institute of Atomic and Molecular Physics, College of Physics, Sichuan University, Chengdu 610065, China.
| | - Yu Zhou
- Department of Physics, College of Basic Medical Sciences, Army Medical University, Chongqing 400038, China
| | - Tian Zhang
- College of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610101, China
| | - Zhao-Yi Zeng
- College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 400047, China.
| | - Xiang-Rong Chen
- Institute of Atomic and Molecular Physics, College of Physics, Sichuan University, Chengdu 610065, China.
| | - Hua-Yun Geng
- National Key Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, CAEP, Mianyang 621900, China
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Kamińska K, Wojaczyńska E. Synthesis of new chiral N-heterocyclic diselenides and their application in the alkoxyselenylation reaction. NEW J CHEM 2022. [DOI: 10.1039/d2nj01434c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel chiral diselenides based on a cyclic or bicyclic backbone were applied in the highly diastereoselective methoxyselenylation of styrene.
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Affiliation(s)
- Karolina Kamińska
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland
| | - Elżbieta Wojaczyńska
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland
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Botteselle GV, Elias WC, Bettanin L, Canto RFS, Salin DNO, Barbosa FAR, Saba S, Gallardo H, Ciancaleoni G, Domingos JB, Rafique J, Braga AL. Catalytic Antioxidant Activity of Bis-Aniline-Derived Diselenides as GPx Mimics. Molecules 2021; 26:molecules26154446. [PMID: 34361597 PMCID: PMC8347129 DOI: 10.3390/molecules26154446] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/14/2021] [Accepted: 07/20/2021] [Indexed: 12/02/2022] Open
Abstract
Herein, we describe a simple and efficient route to access aniline-derived diselenides and evaluate their antioxidant/GPx-mimetic properties. The diselenides were obtained in good yields via ipso-substitution/reduction from the readily available 2-nitroaromatic halides (Cl, Br, I). These diselenides present GPx-mimetic properties, showing better antioxidant activity than the standard GPx-mimetic compounds, ebselen and diphenyl diselenide. DFT analysis demonstrated that the electronic properties of the substituents determine the charge delocalization and the partial charge on selenium, which correlate with the catalytic performances. The amino group concurs in the stabilization of the selenolate intermediate through a hydrogen bond with the selenium.
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Affiliation(s)
- Giancarlo V. Botteselle
- Departamento de Química, Universidade Estadual do Centro-Oeste (UNICENTRO), Guarapuava 85040-167, PR, Brazil
- Correspondence: (G.V.B.); (J.R.); (A.L.B.)
| | - Welman C. Elias
- Departamento de Química, Universidade Federal de Santa Catarina (UFSC), Florianópolis 88040-970, SC, Brazil; (W.C.E.); (L.B.); (D.N.O.S.); (F.A.R.B.); (H.G.); (J.B.D.)
| | - Luana Bettanin
- Departamento de Química, Universidade Federal de Santa Catarina (UFSC), Florianópolis 88040-970, SC, Brazil; (W.C.E.); (L.B.); (D.N.O.S.); (F.A.R.B.); (H.G.); (J.B.D.)
| | - Rômulo F. S. Canto
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre 90050-170, RS, Brazil;
| | - Drielly N. O. Salin
- Departamento de Química, Universidade Federal de Santa Catarina (UFSC), Florianópolis 88040-970, SC, Brazil; (W.C.E.); (L.B.); (D.N.O.S.); (F.A.R.B.); (H.G.); (J.B.D.)
| | - Flavio A. R. Barbosa
- Departamento de Química, Universidade Federal de Santa Catarina (UFSC), Florianópolis 88040-970, SC, Brazil; (W.C.E.); (L.B.); (D.N.O.S.); (F.A.R.B.); (H.G.); (J.B.D.)
| | - Sumbal Saba
- Instituto de Química—IQ, Universidade Federal de Goiás—(UFG), Goiânia 74690-900, GO, Brazil;
| | - Hugo Gallardo
- Departamento de Química, Universidade Federal de Santa Catarina (UFSC), Florianópolis 88040-970, SC, Brazil; (W.C.E.); (L.B.); (D.N.O.S.); (F.A.R.B.); (H.G.); (J.B.D.)
| | - Gianluca Ciancaleoni
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, I-56124 Pisa, Italy;
| | - Josiel B. Domingos
- Departamento de Química, Universidade Federal de Santa Catarina (UFSC), Florianópolis 88040-970, SC, Brazil; (W.C.E.); (L.B.); (D.N.O.S.); (F.A.R.B.); (H.G.); (J.B.D.)
| | - Jamal Rafique
- Instituto de Química—INQUI, Universidade Federal do Mato Grosso do Sul (UFMS), Campo Grande 79074-460, MS, Brazil
- Correspondence: (G.V.B.); (J.R.); (A.L.B.)
| | - Antonio L. Braga
- Departamento de Química, Universidade Federal de Santa Catarina (UFSC), Florianópolis 88040-970, SC, Brazil; (W.C.E.); (L.B.); (D.N.O.S.); (F.A.R.B.); (H.G.); (J.B.D.)
- Department of Chemical Sciences, Faculty of Science, University of Johannesburg, Doornfontein 2028, South Africa
- Correspondence: (G.V.B.); (J.R.); (A.L.B.)
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Mechanistic Insight into SARS-CoV-2 Mpro Inhibition by Organoselenides: The Ebselen Case Study. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11146291] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The main protease (Mpro) of SARS-CoV-2 is a current target for the inhibition of viral replication. Through a combined Docking and Density Functional Theory (DFT) approach, we investigated in-silico the molecular mechanism by which ebselen (IUPAC: 2-phenyl-1,2-benzoselenazol-3-one), the most famous and pharmacologically active organoselenide, inhibits Mpro. For the first time, we report on a mechanistic investigation in an enzyme for the formation of the covalent -S-Se- bond between ebselen and a key enzymatic cysteine. The results highlight the strengths and weaknesses of ebselen and provide hints for a rational drug design of bioorganic selenium-based inhibitors.
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