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Lemos Silva RA, Barbosa MR, Martins CR, Scalabrini Machado DF, Ribeiro L, de Oliveira HCB, da Silva Filho DA. (Ro)vibrational Spectroscopic Constants, Lifetime and QTAIM Evaluation of Fullerene Dimers Stability. Molecules 2023; 28:5023. [PMID: 37446684 DOI: 10.3390/molecules28135023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 05/23/2023] [Accepted: 05/25/2023] [Indexed: 07/15/2023] Open
Abstract
The iconic caged shape of fullerenes gives rise to a series of unique chemical and physical properties; hence a deeper understanding of the attractive and repulsive forces between two buckyballs can bring detrimental information about the structural stability of such complexes, providing significant data applicable for several studies. The potential energy curves for the interaction of multiple van der Waals buckyball complexes with increasing mass were theoretically obtained within the DFT framework at ωB97xD/6-31G(d) compound model. These potential energy curves were employed to estimate the spectroscopic constants and the lifetime of the fullerene complexes with the Discrete Variable Representation and with the Dunham approaches. It was revealed that both methods are compatible in determining the rovibrational structure of the dimers and that they are genuinely stable, i.e., long-lived complexes. To further inquire into the nature of such interaction, Bader's QTAIM approach was applied. QTAIM descriptors indicate that the interactions of these closed-shell systems are dominated by weak van der Waals forces. This non-covalent interaction character was confirmed by the RDG analysis scheme. Indirectly, QTAIM also allowed us to confirm the stability of the non-covalent bonded fullerene dimers. Our lifetime calculations have shown that the studied dimers are stable for more than 1 ps, which increases accordingly with the number of carbon atoms.
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Affiliation(s)
- Rodrigo A Lemos Silva
- Instituto Federal de Educação, Ciência e Tecnologia de Goiás (IFG), Câmpus Jataí, Jataí 75804-714, GO, Brazil
- Grupo de Química Teórica e Estrutural de Anápolis (GQTEA), Campus Central Anápolis de Ciências Exatas e Tecnológicas Henrique Santillo, Universidade Estadual de Goiás, CP 459, Anápolis 75132-903, GO, Brazil
| | - Mateus R Barbosa
- Laboratório de Estrutura Eletrônica e Dinâmica Molecular (LEEDMOL), Instituto de Química, Universidade Federal de Goiás, CP 131, Goiânia 74001-970, GO, Brazil
| | - Caio R Martins
- Grupo de Química Teórica e Estrutural de Anápolis (GQTEA), Campus Central Anápolis de Ciências Exatas e Tecnológicas Henrique Santillo, Universidade Estadual de Goiás, CP 459, Anápolis 75132-903, GO, Brazil
| | - Daniel F Scalabrini Machado
- Laboratório de Modelagem Molecular de Sistemas Complexos (LMSC), Instituto de Química, Universidade de Brasília, CP 4478, Brasília 70919-970, DF, Brazil
| | - Luciano Ribeiro
- Grupo de Química Teórica e Estrutural de Anápolis (GQTEA), Campus Central Anápolis de Ciências Exatas e Tecnológicas Henrique Santillo, Universidade Estadual de Goiás, CP 459, Anápolis 75132-903, GO, Brazil
| | - Heibbe C B de Oliveira
- Laboratório de Estrutura Eletrônica e Dinâmica Molecular (LEEDMOL), Instituto de Química, Universidade Federal de Goiás, CP 131, Goiânia 74001-970, GO, Brazil
| | - Demétrio A da Silva Filho
- Grupo de Semicondutores Orgânicos, Instituto de Física, Campus Darcy Ribeiro, Universidade de Brasília, CP 4478, Brasília 70919-970, DF, Brazil
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2
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Lemos Silva RA, Scalabrini Machado DF, de Oliveira HCB, Ribeiro L, da Silva Filho DA. Theoretical study of the interaction of fullerenes with the emerging contaminant carbamazepine for detection in aqueous environments. Sci Rep 2022; 12:15848. [PMID: 36151225 PMCID: PMC9508123 DOI: 10.1038/s41598-022-19258-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 08/26/2022] [Indexed: 11/16/2022] Open
Abstract
The global increase in drug consumption exposes the growing need to develop new systems for the detection, capture, and treatment of bioactive molecules. Carbamazepine is one instance of such contaminants at the top of the ranking commonly found in sewage treatment systems. This work, therefore, presents a theoretical study of fullerene C60 and its derivatives with substitutional doping with B, Al, Ga, Si, Ge, N and P, for the detection and capture of carbamazepine is aqueous medium. Solvation effects were included by means of the Polarizable Continuum Solvent method. The results indicate that doped fullerenes are sensitive for the detection of carbamazepine both in gaseous and aquatic environments. Investigation on the intermolecular interactions between the drug and the fullerene molecule were carried out, allowing the characterization of the interactions responsible for stabilizing the adsorption of carbamazepine to the fullerenes. The theoretical survey revealed that fullerenes doped with Al, Ga, Si and Ge chemically adsorb carbamazepine whereas for the case of fullerenes doped with other heteroatoms physisorption is responsible for the molecular recognition. Relying on DFT calculations, the fullerene derivatives C59Al, C59Si and C59Ga are the most suitable to act both as a sensor and to uptake carbamazepine in aquatic environments.
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Affiliation(s)
| | - Daniel F Scalabrini Machado
- Laboratório de Modelagem de Sistemas Complexos (LMSC), Instituto de Química, Universidade de Brasília, Brasília, 70919-970, Brazil
| | - Heibbe C B de Oliveira
- Laboratório de Estrutura Eletrônica e Dinâmica Molecular (LEEDMOL), Instituto de Química, Universidade Federal de Goiás, Goiânia, Brazil
| | - Luciano Ribeiro
- Grupo de Química Teórica e Estrutural de Anápolis, Campus de Ciências Exatas de Anápolis, Universidade Estadual de Goiás, Anápolis, Brazil
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Lemos Silva RA, Scalabrini Machado DF, Nunes Rodrigues NM, de Oliveira HCB, Ribeiro L, da Silva Filho DA. Harnessing Greenhouse Gases Absorption by Doped Fullerenes with Externally Oriented Electric Field. Molecules 2022; 27:molecules27092968. [PMID: 35566318 PMCID: PMC9105219 DOI: 10.3390/molecules27092968] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 04/13/2022] [Accepted: 04/29/2022] [Indexed: 11/16/2022] Open
Abstract
In this work, a theoretical investigation of the effects caused by the doping of C20 with silicon (Si) atom as well as the adsorption of CO, CO2 and N2 gases to C20 and C19Si fullerenes was carried out. In concordance with previous studies, it was found that the choice of the doping site can control the structural, electronic, and energetic characteristics of the C19Si system. The ability of C20 and C19Si to adsorb CO, CO2 and N2 gas molecules was evaluated. In order to modulate the process of adsorption of these chemical species to C19Si, an externally oriented electric field was included in the theoretical calculations. It was observed that C19Si is highly selective with respect to CO adsorption. Upon the increase of the electric field intensity the adsorption energy was magnified correspondingly and that the interaction between CO and C19Si changes in nature from a physical adsorption to a partial covalent character interaction.
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Affiliation(s)
- Rodrigo A. Lemos Silva
- Institute of Physics, University of Brasília, Brasília 70919-970, Brazil
- Correspondence: (R.A.L.S.); (D.A.d.S.F.)
| | - Daniel F. Scalabrini Machado
- Laboratório de Modelagem de Sistemas Complexos (LMSC), Instituto de Química, Universidade de Brasília, Brasília 70919-970, Brazil;
| | - Núbia Maria Nunes Rodrigues
- Grupo de Química Teórica e Estrutural de Anápolis, Campus de Ciências Exatas de Anápolis, Universidade Estadual de Goiás, Anápolis 75132-903, Brazil; (N.M.N.R.); (L.R.)
| | - Heibbe C. B. de Oliveira
- Laboratório de Estrutura Eletrônica e Dinâmica Molecular (LEEDMOL), Instituto de Química, Universidade Federal de Goiás, Goiânia 74001-970, Brazil;
| | - Luciano Ribeiro
- Grupo de Química Teórica e Estrutural de Anápolis, Campus de Ciências Exatas de Anápolis, Universidade Estadual de Goiás, Anápolis 75132-903, Brazil; (N.M.N.R.); (L.R.)
| | - Demétrio A. da Silva Filho
- Institute of Physics, University of Brasília, Brasília 70919-970, Brazil
- Correspondence: (R.A.L.S.); (D.A.d.S.F.)
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Medeiros IR, Corrêa JR, Barbosa ALA, Krüger R, Balaguez RA, Lopes TO, de Oliveira HCB, Alves D, Neto BAD. Fluorescent Benzoselenadiazoles: Synthesis, Characterization, and Quantification of Intracellular Lipid Droplets and Multicellular Model Staining. J Org Chem 2020; 85:10561-10573. [PMID: 32806092 DOI: 10.1021/acs.joc.0c01031] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this work, we described the synthesis of 10 new fluorescent 2,1,3-benzoselenadiazole small-molecule derivatives and their chemical- and photocharacterizations. The new derivatives could, for the first time, be successfully applied as selective live cell imaging probes (at nanomolar concentrations) and stained lipid-based structures preferentially. Density functional theory (DFT) calculations were used to help in understanding the photophysical data and the intramolecular charge-transfer (ICT) processes of the synthesized dyes. Some derivatives showed impressive cellular responses, allowing them to be tested as probes in a complex multicellular model (i.e., Caenorhabditis elegans). When compared with the commercially available dye, the new fluorescent compounds showed far better results both at the cellular level and inside the live worm. Inside the multicellular complex model, the tested probes also showed selectivity, a feature not observed when the commercial dye was used to carry out the bioimaging experiments.
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Affiliation(s)
- Ingryd R Medeiros
- Laboratory of Medicinal and Technological Chemistry, University of Brası́lia (IQ-UnB), Campus Universita'rio Darcy Ribeiro, CEP, Brasília-DF 70904970, Brazil
| | - José R Corrêa
- Laboratory of Medicinal and Technological Chemistry, University of Brası́lia (IQ-UnB), Campus Universita'rio Darcy Ribeiro, CEP, Brasília-DF 70904970, Brazil
| | - Ana L A Barbosa
- Laboratory of Medicinal and Technological Chemistry, University of Brası́lia (IQ-UnB), Campus Universita'rio Darcy Ribeiro, CEP, Brasília-DF 70904970, Brazil
| | - Roberta Krüger
- LASOL-CCQFA, Federal University of Pelotas (UFPel), Pelotas, RS 96010-610, Brazil
| | - Renata A Balaguez
- LASOL-CCQFA, Federal University of Pelotas (UFPel), Pelotas, RS 96010-610, Brazil
| | - Thiago O Lopes
- Laboratory of Medicinal and Technological Chemistry, University of Brası́lia (IQ-UnB), Campus Universita'rio Darcy Ribeiro, CEP, Brasília-DF 70904970, Brazil
| | - Heibbe C B de Oliveira
- Laboratory of Medicinal and Technological Chemistry, University of Brası́lia (IQ-UnB), Campus Universita'rio Darcy Ribeiro, CEP, Brasília-DF 70904970, Brazil.,Laboratório de Estrutura Eletrônica e Dinâmica Molecular (LEEDMOL), Instituto de Quı́mica, Universidade Federal de Goiás, Goiânia 74690-900, Brazil
| | - Diego Alves
- LASOL-CCQFA, Federal University of Pelotas (UFPel), Pelotas, RS 96010-610, Brazil
| | - Brenno A D Neto
- Laboratory of Medicinal and Technological Chemistry, University of Brası́lia (IQ-UnB), Campus Universita'rio Darcy Ribeiro, CEP, Brasília-DF 70904970, Brazil
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Coutinho ND, Sanches-Neto FO, Carvalho-Silva VH, de Oliveira HCB, Ribeiro LA, Aquilanti V. Kinetics of the OH+HCl→H 2 O+Cl reaction: Rate determining roles of stereodynamics and roaming and of quantum tunneling. J Comput Chem 2018; 39:2508-2516. [PMID: 30365178 DOI: 10.1002/jcc.25597] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 08/15/2018] [Accepted: 08/20/2018] [Indexed: 02/03/2023]
Abstract
The OH + HCl → H2 O + Cl reaction is one of the most studied four-body systems, extensively investigated by both experimental and theoretical approaches. Here, as a continuation of our previous work on the OH + HBr and OH + HI reactions, which manifest an anti-Arrhenius behavior that was explained by stereodynamic and roaming effects, we extend the strategy to understand the transition to the sub-Arrhenius behavior occurring for the HCl case. As previously, we perform first-principles on-the-fly Born-Oppenheimer molecular dynamics calculations, thermalized at four temperatures (50, 200, 350, and 500 K), but this time we also apply a high-level transition-state-theory, modified to account for tunneling conditions. We find that the theoretical rate constants calculated with Bell tunneling corrections are in good agreement with extensive experimental data available for this reaction in the ample temperature range: (i) simulations show that the roles of molecular orientation in promoting this reaction and of roaming in finding the favorable path are minor than in the HBr and HI cases, and (ii) dominating is the effect of quantum mechanical penetration through the energy barrier along the reaction path on the potential energy surface. The discussion of these results provides clarification of the origin on different non-Arrhenius mechanisms observed along this series of reactions. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Nayara D Coutinho
- Instituto de Química, Universidade de Brasília, Caixa Postal 4478, 70904-970, Brasília, Brazil
| | - Flavio O Sanches-Neto
- Grupo de Química Teórica e Estrutural de Anápolis, Ciências Exatas e Tecnológicas, Universidade Estadual de Goiás, CP 459, 75001-970, Anápolis, GO, Brazil
| | | | - Heibbe C B de Oliveira
- Instituto de Química, Universidade de Brasília, Caixa Postal 4478, 70904-970, Brasília, Brazil
| | - Luiz A Ribeiro
- Institute of Physics, University of Brasilia, Brasilia, 70910-900, Brazil
| | - Vincenzo Aquilanti
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy.,Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche, Area dela Ricerca di Roma Tor Vergata, Via del Fosso del Cavaliere, 00133, Rome, Italy
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6
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Silva RAL, de Brito SF, Machado DFS, Carvalho-Silva VH, de Oliveira HCB, Ribeiro L. The influence of the configuration of the (C 70) 2 dimer on its rovibrational spectroscopic properties: a theoretical survey. J Mol Model 2018; 24:235. [PMID: 30112677 DOI: 10.1007/s00894-018-3780-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 08/01/2018] [Indexed: 12/01/2022]
Abstract
A study of the spectroscopic properties of the buckyball dimer (C70)2 was performed, which involved mapping the potential energy curve of this system. The spectroscopic constants of the system were obtained using theoretical Dunham and discrete variable representation methods, as well as the Rydberg analytical function expanded to the sixth degree. Because the fullerenes in the dimer have both hexagonal and pentagonal faces, the properties of (C70)2 were examined for different system configurations. The fullerene dimerization process involves a weak interaction, possibly mediated by short-range components such as van der Waals forces. The differences between the spectroscopic constants of the various (C70)2 configurations and between their dissociation energies De were found to be rather small, which can be attributed to the dominant influence of the hexagonal faces of the fullerenes on the interaction between the fullerenes. These results should aid our understanding of the process of fullerene dimer formation and hopefully facilitate the development and application of new materials based on these dimers. Graphical Abstract Comparison of the potential energy curve and a schematic representation for the all (C70)2 fullerenes dimers configurations.
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Affiliation(s)
- Rodrigo A L Silva
- Grupo de Química Teórica e Estrutural de Anápolis (GQTEA), Câmpus Anápolis de Ciências Exatas e Tecnológicas Henrique Santillo, Universidade Estadual de Goiás, CP 459, Anápolis, GO, Brazil
| | - Sandro F de Brito
- Laboratório de Estrutura Eletrônica e Dinâmica Molecular I (LEEDMOL I), Instituto de Química, Universidade de Brasília, CP 4478, Brasília, DF, 70919-970, Brazil
| | - Daniel F S Machado
- Laboratório de Estrutura Eletrônica e Dinâmica Molecular I (LEEDMOL I), Instituto de Química, Universidade de Brasília, CP 4478, Brasília, DF, 70919-970, Brazil
| | - Valter H Carvalho-Silva
- Grupo de Química Teórica e Estrutural de Anápolis (GQTEA), Câmpus Anápolis de Ciências Exatas e Tecnológicas Henrique Santillo, Universidade Estadual de Goiás, CP 459, Anápolis, GO, Brazil
| | - Heibbe C B de Oliveira
- Laboratório de Estrutura Eletrônica e Dinâmica Molecular I (LEEDMOL I), Instituto de Química, Universidade de Brasília, CP 4478, Brasília, DF, 70919-970, Brazil.,Laboratório de Estrutura Eletrônica e Dinâmica Molecular II (LEEDMOL II), Instituto de Química, Universidade Federal de Goiás, CP 131, Goiânia, GO, 74001-970, Brazil
| | - Luciano Ribeiro
- Grupo de Química Teórica e Estrutural de Anápolis (GQTEA), Câmpus Anápolis de Ciências Exatas e Tecnológicas Henrique Santillo, Universidade Estadual de Goiás, CP 459, Anápolis, GO, Brazil.
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7
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Neto APV, Machado DFS, Lopes TO, Camargo AJ, de Oliveira HCB. Explicit Aqueous Solvation Treatment of Epinephrine from Car–Parrinello Molecular Dynamics: Effect of Hydrogen Bonding on the Electronic Absorption Spectrum. J Phys Chem B 2018; 122:8439-8450. [DOI: 10.1021/acs.jpcb.8b06110] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Arsênio P. V. Neto
- Laboratório de Estrutura Eletrônica e Dinâmica Molecular (LEEDMOL), Instituto de Química, Universidade Federal de Goiás, 70904-970 Brasília, DF, Brazil
| | - Daniel F. Scalabrini Machado
- Laboratório de Estrutura Eletrônica e Dinâmica Molecular (LEEDMOL), Instituto de Química, Universidade Federal de Goiás, 70904-970 Brasília, DF, Brazil
| | - Thiago O. Lopes
- Laboratório de Estrutura Eletrônica e Dinâmica Molecular (LEEDMOL), Instituto de Química, Universidade Federal de Goiás, 70904-970 Brasília, DF, Brazil
| | - Ademir J. Camargo
- Grupo de Química Teórica de Anápolis (GQTEA), Universidade Estadual de Goiás, 75132-903 Anápolis, Goiás, Brazil
| | - Heibbe C. B. de Oliveira
- Laboratório de Estrutura Eletrônica e Dinâmica Molecular (LEEDMOL), Instituto de Química, Universidade Federal de Goiás, 70904-970 Brasília, DF, Brazil
- Laboratório de Estrutura Eletrônica e Dinâmica Molecular (LEEDMOL), Instituto de Química, Universidade de Brasília, 74690-900 Goiânia, Goiás, Brazil
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Mota AR, Correa JR, de Andrade LP, Assumpção JA, de Souza Cintra GA, Freitas-Junior LH, da Silva WA, de Oliveira HCB, Neto BAD. From Live Cells to Caenorhabditis elegans: Selective Staining and Quantification of Lipid Structures Using a Fluorescent Hybrid Benzothiadiazole Derivative. ACS Omega 2018; 3:3874-3881. [PMID: 30023883 PMCID: PMC6044862 DOI: 10.1021/acsomega.8b00434] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 03/26/2018] [Indexed: 06/08/2023]
Abstract
The current article describes the synthesis, characterization, and application of a designed hybrid fluorescent BTD-coumarin (2,1,3-benzothiadiazole-coumarin) derivative (named BTD-Lip). The use of BTD-Lip for live-cells staining showed excellent results, and lipid droplets (LDs) could be selectively stained. When compared with the commercially available dye (BODIPY) for LD staining, it was noted that the designed hybrid fluorescence was capable of staining a considerable larger number of LDs in both live and fixed cells (ca. 40% more). The new dye was also tested on live Caenorhabditis elegans (complex model) and showed an impressive selectivity inside the worm, whereas the commercial dye showed no selectivity in the complex model.
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Affiliation(s)
- Alberto
A. R. Mota
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília (IQ-UnB), Campus Universitário Darcy Ribeiro, P.O. Box 4478, Brasília-DF CEP 70904970, Brazil
| | - Jose R. Correa
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília (IQ-UnB), Campus Universitário Darcy Ribeiro, P.O. Box 4478, Brasília-DF CEP 70904970, Brazil
| | - Lorena P. de Andrade
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília (IQ-UnB), Campus Universitário Darcy Ribeiro, P.O. Box 4478, Brasília-DF CEP 70904970, Brazil
| | - José A.
F. Assumpção
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília (IQ-UnB), Campus Universitário Darcy Ribeiro, P.O. Box 4478, Brasília-DF CEP 70904970, Brazil
| | - Giovana A. de Souza Cintra
- Departamento
de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo (USP), 05508-900 São
Paulo, São Paulo, Brasil
| | - Lucio H. Freitas-Junior
- Departamento
de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo (USP), 05508-900 São
Paulo, São Paulo, Brasil
| | - Wender A. da Silva
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília (IQ-UnB), Campus Universitário Darcy Ribeiro, P.O. Box 4478, Brasília-DF CEP 70904970, Brazil
| | - Heibbe C. B. de Oliveira
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília (IQ-UnB), Campus Universitário Darcy Ribeiro, P.O. Box 4478, Brasília-DF CEP 70904970, Brazil
| | - Brenno A. D. Neto
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília (IQ-UnB), Campus Universitário Darcy Ribeiro, P.O. Box 4478, Brasília-DF CEP 70904970, Brazil
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9
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Lopes TO, Machado DFS, Risko C, Brédas JL, de Oliveira HCB. Bond Ellipticity Alternation: An Accurate Descriptor of the Nonlinear Optical Properties of π-Conjugated Chromophores. J Phys Chem Lett 2018; 9:1377-1383. [PMID: 29498530 DOI: 10.1021/acs.jpclett.8b00478] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Well-defined structure-property relationships offer a conceptual basis to afford a priori design principles to develop novel π-conjugated molecular and polymer materials for nonlinear optical (NLO) applications. Here, we introduce the bond ellipticity alternation (BEA) as a robust parameter to assess the NLO characteristics of organic chromophores and illustrate its effectiveness in the case of streptocyanines. BEA is based on the symmetry of the electron density, a physical observable that can be determined from experimental X-ray electron densities or from quantum-chemical calculations. Through comparisons to the well-established bond-length alternation and π-bond order alternation parameters, we demonstrate the generality of BEA to foreshadow NLO characteristics and underline that, in the case of large electric fields, BEA is a more reliable descriptor. Hence, this study introduces BEA as a prominent descriptor of organic chromophores of interest for NLO applications.
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Affiliation(s)
- Thiago O Lopes
- Laboratório de Estrutura Eletrônica e Dinâmica Molecular (LEEDMOL), Institute of Chemistry , University of Brasília , Campus Darcy Ribeiro , Brasília , Brazil
| | - Daniel F Scalabrini Machado
- Laboratório de Estrutura Eletrônica e Dinâmica Molecular (LEEDMOL), Institute of Chemistry , University of Brasília , Campus Darcy Ribeiro , Brasília , Brazil
| | - Chad Risko
- Department of Chemistry and Center for Applied Energy Research , University of Kentucky , Lexington , Kentucky 40506-0055 , United States
| | - Jean-Luc Brédas
- School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , United States
| | - Heibbe C B de Oliveira
- Laboratório de Estrutura Eletrônica e Dinâmica Molecular (LEEDMOL), Institute of Chemistry , University of Brasília , Campus Darcy Ribeiro , Brasília , Brazil
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10
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Rodrigues TS, Lesage D, da Silva WA, Cole RB, Ebeling G, Dupont J, de Oliveira HCB, Eberlin MN, Neto BAD. Charge-tagged N-heterocyclic carbenes (NHC): Direct transfer from ionic liquid solutions and long-lived nature in the gas phase. J Am Soc Mass Spectrom 2017; 28:1021-1029. [PMID: 28389984 DOI: 10.1007/s13361-017-1637-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 02/20/2017] [Accepted: 02/23/2017] [Indexed: 06/07/2023]
Abstract
Negatively charge-tagged N-heterocyclic carbenes have been formed in solution via deprotonation of imidazolium ions bearing acid side groups and transferred to the gas phase via ESI(-)-MS. The structure of the putative and apparently stable gaseous carbenes formed in such conditions were then probed via reactions with carbon dioxide using a triple quadrupole mass spectrometer particularly optimized for ion/molecule reactions of ESI-generated ions. Complete conversion to imidazolium carboxylates was achieved, which seems to demonstrate the efficiency of the transfer, the gas-phase stability, and the long-lived nature of these unprecedented charge-tagged carbenes and their predominance in the ionic population. Comprehensive studies on the intrinsic reactivity of N-heterocyclic carbenes with silent charge tags are therefore possible. Graphical Abstract ᅟ.
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Affiliation(s)
- Thyago S Rodrigues
- Laboratory of Medicinal and Technological Chemistry, University of Brasília (IQ-UnB), Campus Universitário Darcy Ribeiro, CEP 70904970, P.O.Box 4478, Brasília, DF, Brazil
| | - Denis Lesage
- Institut Parisien de Chimie Moléculaire, UMR 8232, Université Pierre et Marie Curie-Paris6, 4 place Jussieu, 75252, Paris Cedex 05, France
| | - Wender A da Silva
- Laboratory of Medicinal and Technological Chemistry, University of Brasília (IQ-UnB), Campus Universitário Darcy Ribeiro, CEP 70904970, P.O.Box 4478, Brasília, DF, Brazil
| | - Richard B Cole
- Institut Parisien de Chimie Moléculaire, UMR 8232, Université Pierre et Marie Curie-Paris6, 4 place Jussieu, 75252, Paris Cedex 05, France
| | - Günter Ebeling
- Laboratory of Molecular Catalysis, Institute of Chemistry, UFRGS, Av. Bento Gonçalves, 9500, Porto Alegre, 91501-970, RS, Brazil
| | - Jaïrton Dupont
- Laboratory of Molecular Catalysis, Institute of Chemistry, UFRGS, Av. Bento Gonçalves, 9500, Porto Alegre, 91501-970, RS, Brazil
| | - Heibbe C B de Oliveira
- Laboratory of Medicinal and Technological Chemistry, University of Brasília (IQ-UnB), Campus Universitário Darcy Ribeiro, CEP 70904970, P.O.Box 4478, Brasília, DF, Brazil
| | - Marcos N Eberlin
- Thomson Mass Spectrometry Laboratory, University of Campinas-UNICAMP, Campinas, SP, Brazil.
| | - Brenno A D Neto
- Laboratory of Medicinal and Technological Chemistry, University of Brasília (IQ-UnB), Campus Universitário Darcy Ribeiro, CEP 70904970, P.O.Box 4478, Brasília, DF, Brazil.
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11
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Valverde C, Rodrigues RFN, Machado DFS, Baseia B, de Oliveira HCB. Effect of the crystalline environment on the third-order nonlinear optical properties of L-arginine phosphate monohydrate: a theoretical study. J Mol Model 2017; 23:122. [DOI: 10.1007/s00894-017-3274-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 02/06/2017] [Indexed: 11/29/2022]
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12
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Almeida LR, Anjos MM, Ribeiro GC, Valverde C, Machado DFS, Oliveira GR, Napolitano HB, de Oliveira HCB. Synthesis, structural characterization and computational study of a novel amino chalcone: a potential nonlinear optical material. NEW J CHEM 2017. [DOI: 10.1039/c5nj03214h] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The interest for novel chalcone-based materials in nonlinear optics is dependent on strong second harmonic generation in organic systems.
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Affiliation(s)
- Leonardo R. Almeida
- Laboratório de Química Teórica e Estrutural de Anápolis (LQTEA)
- Campus de Ciências Exatas e Tecnológicas, Universidade Estadual de Goiás
- Anápolis
- Brazil
| | - Murilo M. Anjos
- Instituto de Química
- Universidade Federal de Goiás
- Goiânia
- Brazil
| | - Gabriela C. Ribeiro
- Laboratório de Química Teórica e Estrutural de Anápolis (LQTEA)
- Campus de Ciências Exatas e Tecnológicas, Universidade Estadual de Goiás
- Anápolis
- Brazil
| | - Clodoaldo Valverde
- Laboratório de Química Teórica e Estrutural de Anápolis (LQTEA)
- Campus de Ciências Exatas e Tecnológicas, Universidade Estadual de Goiás
- Anápolis
- Brazil
- Universidade Paulista
| | - Daniel F. S. Machado
- Laboratório de Estrutura Eletrônica e Dinâmica Molecular (LEEDMOL)
- Instituto de Química
- Universidade de Brasilia
- Brasilia
- Brazil
| | | | - Hamilton B. Napolitano
- Laboratório de Química Teórica e Estrutural de Anápolis (LQTEA)
- Campus de Ciências Exatas e Tecnológicas, Universidade Estadual de Goiás
- Anápolis
- Brazil
| | - Heibbe C. B. de Oliveira
- Laboratório de Estrutura Eletrônica e Dinâmica Molecular (LEEDMOL)
- Instituto de Química
- Universidade de Brasilia
- Brasilia
- Brazil
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13
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Carvalho-Silva VH, Aquilanti V, de Oliveira HCB, Mundim KC. Deformed transition-state theory: Deviation from Arrhenius behavior and application to bimolecular hydrogen transfer reaction rates in the tunneling regime. J Comput Chem 2016; 38:178-188. [PMID: 27859380 DOI: 10.1002/jcc.24529] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 09/24/2016] [Accepted: 10/10/2016] [Indexed: 12/14/2022]
Abstract
A formulation is presented for the application of tools from quantum chemistry and transition-state theory to phenomenologically cover cases where reaction rates deviate from Arrhenius law at low temperatures. A parameter d is introduced to describe the deviation for the systems from reaching the thermodynamic limit and is identified as the linearizing coefficient in the dependence of the inverse activation energy with inverse temperature. Its physical meaning is given and when deviation can be ascribed to quantum mechanical tunneling its value is calculated explicitly. Here, a new derivation is given of the previously established relationship of the parameter d with features of the barrier in the potential energy surface. The proposed variant of transition state theory permits comparison with experiments and tests against alternative formulations. Prescriptions are provided and implemented to three hydrogen transfer reactions: CH4 + OH → CH3 + H2 O, CH3 Cl + OH → CH2 Cl + H2 O and H2 + CN → H + HCN, widely investigated both experimentally and theoretically. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Valter H Carvalho-Silva
- Grupo de Química Teórica e Estrutural de Anápolis, Unidade Universitária de Ciências Exatas e Tecnológicas, Universidade Estadual de Goiás, P.O. Box 459, 75001-970, Anápolis, GO, Brazil
| | - Vincenzo Aquilanti
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy. Instituto de Física, Universidade Federal da Bahia, 40210, Salvador, Brazil.,Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche, 00016, Rome, Italy
| | - Heibbe C B de Oliveira
- Instituto de Química, Universidade de Brasília, Caixa Postal 4478, 70904-970, Brasília, Brazil
| | - Kleber C Mundim
- Instituto de Química, Universidade de Brasília, Caixa Postal 4478, 70904-970, Brasília, Brazil
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14
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Coutinho ND, Aquilanti V, Silva VHC, Camargo AJ, Mundim KC, de Oliveira HCB. Stereodirectional Origin of anti-Arrhenius Kinetics for a Tetraatomic Hydrogen Exchange Reaction: Born-Oppenheimer Molecular Dynamics for OH + HBr. J Phys Chem A 2016; 120:5408-17. [PMID: 27205872 DOI: 10.1021/acs.jpca.6b03958] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Among four-atom processes, the reaction OH + HBr → H2O + Br is one of the most studied experimentally: its kinetics has manifested an unusual anti-Arrhenius behavior, namely, a marked decrease of the rate constant as the temperature increases, which has intrigued theoreticians for a long time. Recently, salient features of the potential energy surface have been characterized and most kinetic aspects can be considered as satisfactorily reproduced by classical trajectory simulations. Motivation of the work reported in this paper is the investigation of the stereodirectional dynamics of this reaction as the prominent reason for the peculiar kinetics: we started in a previous Letter ( J. Phys. Chem. Lett. 2015 , 6 , 1553 - 1558 ) a first-principles Born-Oppenheimer "canonical" molecular dynamics approach. Trajectories are step-by-step generated on a potential energy surface quantum mechanically calculated on-the-fly and are thermostatically equilibrated to correspond to a specific temperature. Here, refinements of the method permitted a major increase of the number of trajectories and the consideration of four temperatures -50, +200, +350, and +500 K, for which the sampling of initial conditions allowed us to characterize the stereodynamical effect. The role is documented of the adjustment of the reactants' mutual orientation to encounter the entrance into the "cone of acceptance" for reactivity. The aperture angle of this cone is dictated by a range of directions of approach compatible with the formation of the specific HOH angle of the product water molecule; and consistently the adjustment is progressively less effective the higher the kinetic energy. Qualitatively, this emerging picture corroborates experiments on this reaction, involving collisions of aligned and oriented molecular beams, and covering a range of energies higher than the thermal ones. The extraction of thermal rate constants from this molecular dynamics approach is discussed and the systematic sampling of the canonical ensemble is indicated as needed for quantitative comparison with the kinetic experiments.
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Affiliation(s)
- Nayara D Coutinho
- Instituto de Química, Universidade de Brasília , 4478, 70904-970 Brasília, Brazil
| | - Vincenzo Aquilanti
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia , Via Elce di Sotto 8, 06123, Perugia, Italy.,Instituto de Física, Universidade Federal da Bahia , 40210 Salvador, Brazil.,Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche , 00016 Rome, Italy
| | - Valter H C Silva
- Grupo de Química Teórica e Estrutural de Anápolis, Ciências Exatas e Tecnológicas, Universidade Estadual de Goiás , 0459, 75001-970 Anápolis, GO Brazil
| | - Ademir J Camargo
- Grupo de Química Teórica e Estrutural de Anápolis, Ciências Exatas e Tecnológicas, Universidade Estadual de Goiás , 0459, 75001-970 Anápolis, GO Brazil
| | - Kleber C Mundim
- Instituto de Química, Universidade de Brasília , 4478, 70904-970 Brasília, Brazil
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15
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Mota AAR, Corrêa JR, Carvalho PHPR, de Sousa NMP, de Oliveira HCB, Gatto CC, da Silva Filho DA, de Oliveira AL, Neto BAD. Synthesis, Structure, Properties, and Bioimaging of a Fluorescent Nitrogen-Linked Bisbenzothiadiazole. J Org Chem 2016; 81:2958-65. [PMID: 26930300 DOI: 10.1021/acs.joc.6b00245] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
This paper describes the synthesis, structure, photophysical properties, and bioimaging application of a novel 2,1,3-benzothiadiazole (BTD)-based rationally designed fluorophore. The capability of undergoing efficient stabilizing processes from the excited state allowed the novel BTD derivative to be used as a stable probe for bioimaging applications. No notable photobleaching effect or degradation could be observed during the experimental time period. Before the synthesis, the molecular architecture of the novel BTD derivative was evaluated by means of DFT calculations to validate the chosen design. Single-crystal X-ray analysis revealed the nearly flat characteristics of the structure in a syn conformation. The fluorophore was successfully tested as a live-cell-imaging probe and efficiently stained MCF-7 breast cancer cell lineages.
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Affiliation(s)
- Alberto A R Mota
- Laboratory of Medicinal and Technological Chemistry, University of Brasilia (IQ-UnB) , Campus Universitário Darcy Ribeiro, CEP, P.O. Box 4478,Brasilia, DF 70904-970, Brazil
| | - José R Corrêa
- Laboratory of Medicinal and Technological Chemistry, University of Brasilia (IQ-UnB) , Campus Universitário Darcy Ribeiro, CEP, P.O. Box 4478,Brasilia, DF 70904-970, Brazil
| | - Pedro H P R Carvalho
- Laboratory of Medicinal and Technological Chemistry, University of Brasilia (IQ-UnB) , Campus Universitário Darcy Ribeiro, CEP, P.O. Box 4478,Brasilia, DF 70904-970, Brazil
| | - Núbia M P de Sousa
- Laboratory of Medicinal and Technological Chemistry, University of Brasilia (IQ-UnB) , Campus Universitário Darcy Ribeiro, CEP, P.O. Box 4478,Brasilia, DF 70904-970, Brazil
| | - Heibbe C B de Oliveira
- Laboratory of Medicinal and Technological Chemistry, University of Brasilia (IQ-UnB) , Campus Universitário Darcy Ribeiro, CEP, P.O. Box 4478,Brasilia, DF 70904-970, Brazil
| | - Claudia C Gatto
- Laboratory of Medicinal and Technological Chemistry, University of Brasilia (IQ-UnB) , Campus Universitário Darcy Ribeiro, CEP, P.O. Box 4478,Brasilia, DF 70904-970, Brazil
| | - Demétrio A da Silva Filho
- Institute of Physics, University of Brasilia (IF-UnB) , Campus Universitario Darcy Ribeiro, CEP, Brasilia, DF 70919-970, Brazil
| | - Aline L de Oliveira
- Laboratory of Medicinal and Technological Chemistry, University of Brasilia (IQ-UnB) , Campus Universitário Darcy Ribeiro, CEP, P.O. Box 4478,Brasilia, DF 70904-970, Brazil
| | - Brenno A D Neto
- Laboratory of Medicinal and Technological Chemistry, University of Brasilia (IQ-UnB) , Campus Universitário Darcy Ribeiro, CEP, P.O. Box 4478,Brasilia, DF 70904-970, Brazil
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16
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Coutinho ND, Silva VHC, de Oliveira HCB, Camargo AJ, Mundim KC, Aquilanti V. Stereodynamical Origin of Anti-Arrhenius Kinetics: Negative Activation Energy and Roaming for a Four-Atom Reaction. J Phys Chem Lett 2015; 6:1553-8. [PMID: 26263312 DOI: 10.1021/acs.jpclett.5b00384] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The OH + HBr → H2O + Br reaction, prototypical of halogen-atom liberating processes relevant to mechanisms for atmospheric ozone destruction, attracted frequent attention of experimental chemical kinetics: the nature of the unusual reactivity drop from low to high temperatures eluded a variety of theoretical efforts, ranking this one among the most studied four-atom reactions. Here, inspired by oriented molecular-beams experiments, we develop a first-principles stereodynamical approach. Thermalized sets of trajectories, evolving on a multidimensional potential energy surface quantum mechanically generated on-the-fly, provide a map of most visited regions at each temperature. Visualizations of rearrangements of bonds along trajectories and of the role of specific angles of reactants' mutual approach elucidate the mechanistic change from the low kinetic energy regime (where incident reactants reorient to find the propitious alignment leading to reaction) to high temperature (where speed hinders adjustment of directionality and roaming delays reactivity).
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Affiliation(s)
- Nayara D Coutinho
- †Unidade Universitária de Ciências Exatas e Tecnológicas, 75001-970, Anápolis, and Unidade de Ipameri, Ipameri, Universidade Estadual de Goiás, 75780-000 Goiás, Brazil
- ‡Instituto de Química, Universidade de Brasília, Caixa Postal 4478, 70904-970 Brasília, Brazil
| | - Valter H C Silva
- †Unidade Universitária de Ciências Exatas e Tecnológicas, 75001-970, Anápolis, and Unidade de Ipameri, Ipameri, Universidade Estadual de Goiás, 75780-000 Goiás, Brazil
| | - Heibbe C B de Oliveira
- ‡Instituto de Química, Universidade de Brasília, Caixa Postal 4478, 70904-970 Brasília, Brazil
| | - Ademir J Camargo
- †Unidade Universitária de Ciências Exatas e Tecnológicas, 75001-970, Anápolis, and Unidade de Ipameri, Ipameri, Universidade Estadual de Goiás, 75780-000 Goiás, Brazil
| | - Kleber C Mundim
- ‡Instituto de Química, Universidade de Brasília, Caixa Postal 4478, 70904-970 Brasília, Brazil
| | - Vincenzo Aquilanti
- §Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
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17
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Alvim HGO, de Oliveira HCB, Bataglion GA, Eberlin MN, Ramos LM, Silva WA. Synthesis of 2-arylbenzimidazoles under mild conditions catalyzed by a heteropolyacid-containing task-specific ionic liquid and catalyst investigation by electrospray (tandem) mass spectrometry. RSC Adv 2015. [DOI: 10.1039/c5ra12044f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A task-specific ionic liquid constituted by a Bronsted acid (1-(3-sulfopropyl)-3-methyl-imidazolium hydrogen sulfate), namely MSI, and by [PW12O40]3−, namely PW, was used for the condensation reaction in the synthesis of 2-arylbenzimidazoles.
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Affiliation(s)
- Haline G. O. Alvim
- Laboratory of Bioactive Compounds Synthesis N.T.S
- University of Brasilia (IQ-UnB)
- Campus Universitário Darcy Ribeiro
- Brasília-DF
- Brazil
| | - Heibbe C. B. de Oliveira
- Laboratory of Bioactive Compounds Synthesis N.T.S
- University of Brasilia (IQ-UnB)
- Campus Universitário Darcy Ribeiro
- Brasília-DF
- Brazil
| | - Giovana A. Bataglion
- ThoMSon Mass Spectrometry Laboratory
- University of Campinas-UNICAMP
- Campinas SP 13085-970
- Brazil
| | - Marcos N. Eberlin
- ThoMSon Mass Spectrometry Laboratory
- University of Campinas-UNICAMP
- Campinas SP 13085-970
- Brazil
| | - Luciana M. Ramos
- Laboratory of Bioactive Compounds Synthesis N.T.S
- University of Brasilia (IQ-UnB)
- Campus Universitário Darcy Ribeiro
- Brasília-DF
- Brazil
| | - Wender A. Silva
- Laboratory of Bioactive Compounds Synthesis N.T.S
- University of Brasilia (IQ-UnB)
- Campus Universitário Darcy Ribeiro
- Brasília-DF
- Brazil
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18
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Sallum LO, Napolitano HB, Carvalho PDS, Cidade AF, de Aquino GLB, Coutinho ND, Camargo AJ, Ellena J, de Oliveira HCB, Silva VHC. Effect of the Methanol Molecule on the Stabilization of C18H18O4 Crystal: Combined Theoretical and Structural Investigation. J Phys Chem A 2014; 118:10048-56. [DOI: 10.1021/jp504288r] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Lóide O. Sallum
- Grupo
de Química Teórica e Estrutural de Anápolis,
Ciências Exatas e Tecnológicas. Universidade Estadual de Goiás, CP 459, 75001-970 Anápolis, GO Brazil
| | - Hamilton B. Napolitano
- Grupo
de Química Teórica e Estrutural de Anápolis,
Ciências Exatas e Tecnológicas. Universidade Estadual de Goiás, CP 459, 75001-970 Anápolis, GO Brazil
| | - Paulo de Sousa Carvalho
- Grupo
de Química Teórica e Estrutural de Anápolis,
Ciências Exatas e Tecnológicas. Universidade Estadual de Goiás, CP 459, 75001-970 Anápolis, GO Brazil
- Instituto
de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970 São Carlos, SP, Brazil
| | - Amanda Feitosa Cidade
- Grupo
de Química Teórica e Estrutural de Anápolis,
Ciências Exatas e Tecnológicas. Universidade Estadual de Goiás, CP 459, 75001-970 Anápolis, GO Brazil
| | - Gilberto Lucio Benedito de Aquino
- Grupo
de Química Teórica e Estrutural de Anápolis,
Ciências Exatas e Tecnológicas. Universidade Estadual de Goiás, CP 459, 75001-970 Anápolis, GO Brazil
| | - Nayara D. Coutinho
- Grupo
de Química Teórica e Estrutural de Anápolis,
Ciências Exatas e Tecnológicas. Universidade Estadual de Goiás, CP 459, 75001-970 Anápolis, GO Brazil
- Laboratório
de Modelagem de Sistemas Complexos, Instituto de Química, Universidade de Brasília, Caixa Postal 4478, 70904-970 Brasília, Brazil
| | - Ademir J. Camargo
- Grupo
de Química Teórica e Estrutural de Anápolis,
Ciências Exatas e Tecnológicas. Universidade Estadual de Goiás, CP 459, 75001-970 Anápolis, GO Brazil
| | - Javier Ellena
- Instituto
de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970 São Carlos, SP, Brazil
| | - Heibbe C. B. de Oliveira
- Laboratório
de Modelagem de Sistemas Complexos, Instituto de Química, Universidade de Brasília, Caixa Postal 4478, 70904-970 Brasília, Brazil
| | - Valter H. C. Silva
- Grupo
de Química Teórica e Estrutural de Anápolis,
Ciências Exatas e Tecnológicas. Universidade Estadual de Goiás, CP 459, 75001-970 Anápolis, GO Brazil
- Faculdade de Tecnologia
SENAI Roberto Mange, 75113-630 Anápolis, GO, Brazil
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19
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Mota AAR, Carvalho PHPR, Guido BC, de Oliveira HCB, Soares TA, Corrêa JR, Neto BAD. Bioimaging, cellular uptake and dynamics in living cells of a lipophilic fluorescent benzothiadiazole at low temperature (4 °C). Chem Sci 2014. [DOI: 10.1039/c4sc01785d] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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20
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Rodrigues TS, Silva VHC, Lalli PM, de Oliveira HCB, da Silva WA, Coelho F, Eberlin MN, Neto BAD. Morita–Baylis–Hillman Reaction: ESI-MS(/MS) Investigation with Charge Tags and Ionic Liquid Effect Origin Revealed by DFT Calculations. J Org Chem 2014; 79:5239-48. [DOI: 10.1021/jo500799j] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Thyago S. Rodrigues
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy Ribeiro, P.O.
Box 4478, 70904-970 Brasília, DF, Brazil
| | - Valter H. C. Silva
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy Ribeiro, P.O.
Box 4478, 70904-970 Brasília, DF, Brazil
- Unidade
Universitária de Ciências Exatas e Tecnológicas, Universidade Estadual de Goiás, P.O. Box 459, 75001-970 Anápolis, GO, Brazil
| | - Priscila M. Lalli
- ThoMSon
Mass Spectrometry Laboratory, University of Campinas-UNICAMP, 13083-970 Campinas, SP, Brazil
| | - Heibbe C. B. de Oliveira
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy Ribeiro, P.O.
Box 4478, 70904-970 Brasília, DF, Brazil
| | - Wender A. da Silva
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy Ribeiro, P.O.
Box 4478, 70904-970 Brasília, DF, Brazil
| | - Fernando Coelho
- ThoMSon
Mass Spectrometry Laboratory, University of Campinas-UNICAMP, 13083-970 Campinas, SP, Brazil
| | - Marcos N. Eberlin
- ThoMSon
Mass Spectrometry Laboratory, University of Campinas-UNICAMP, 13083-970 Campinas, SP, Brazil
| | - Brenno A. D. Neto
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy Ribeiro, P.O.
Box 4478, 70904-970 Brasília, DF, Brazil
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21
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Alvim HGO, Lima TB, de Oliveira AL, de Oliveira HCB, Silva FM, Gozzo FC, Souza RY, da Silva WA, Neto BAD. Facts, Presumptions, and Myths on the Solvent-Free and Catalyst-Free Biginelli Reaction. What is Catalysis for? J Org Chem 2014; 79:3383-97. [DOI: 10.1021/jo5001498] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Haline G. O. Alvim
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy
Ribeiro, P.O.Box 4478, Brasília, Distrito Federal CEP 70904-970, Brazil
| | - Tatiani B. Lima
- Institute
of Chemistry, University of Campinas (Unicamp), Campinas, São Paulo 13083-970, Brazil
| | - Aline L. de Oliveira
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy
Ribeiro, P.O.Box 4478, Brasília, Distrito Federal CEP 70904-970, Brazil
| | - Heibbe C. B. de Oliveira
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy
Ribeiro, P.O.Box 4478, Brasília, Distrito Federal CEP 70904-970, Brazil
| | - Fabricio M. Silva
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy
Ribeiro, P.O.Box 4478, Brasília, Distrito Federal CEP 70904-970, Brazil
| | - Fabio C. Gozzo
- Institute
of Chemistry, University of Campinas (Unicamp), Campinas, São Paulo 13083-970, Brazil
| | - Roberto Y. Souza
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy
Ribeiro, P.O.Box 4478, Brasília, Distrito Federal CEP 70904-970, Brazil
| | - Wender A. da Silva
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy
Ribeiro, P.O.Box 4478, Brasília, Distrito Federal CEP 70904-970, Brazil
| | - Brenno A. D. Neto
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy
Ribeiro, P.O.Box 4478, Brasília, Distrito Federal CEP 70904-970, Brazil
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22
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Medeiros GA, da Silva WA, Bataglion GA, Ferreira DAC, de Oliveira HCB, Eberlin MN, Neto BAD. Probing the mechanism of the Ugi four-component reaction with charge-tagged reagents by ESI-MS(/MS). Chem Commun (Camb) 2014; 50:338-40. [DOI: 10.1039/c3cc47156j] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Neto BAD, Mota AAR, Gatto CC, Machado G, Fasciotti M, Oliveira HCBD, Ferreira DAC, Bianchi O, Eberlin MN. Solid, Solution and Gas Phase Interactions of an Imidazolium-Based Task-Specific Ionic Liquid Derived from Natural Kojic Acid. J BRAZIL CHEM SOC 2014. [DOI: 10.5935/0103-5053.20140220] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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24
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da Cruz EHG, Carvalho PHPR, Corrêa JR, Silva DAC, Diogo EBT, de Souza Filho JD, Cavalcanti BC, Pessoa C, de Oliveira HCB, Guido BC, da Silva Filho DA, Neto BAD, da Silva Júnior EN. Design, synthesis and application of fluorescent 2,1,3-benzothiadiazole-triazole-linked biologically active lapachone derivatives. NEW J CHEM 2014. [DOI: 10.1039/c3nj01499a] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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25
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dos Santos MR, Coriolano R, Godoi MN, Monteiro AL, de Oliveira HCB, Eberlin MN, Neto BAD. Phosphine-free Heck reaction: mechanistic insights and catalysis “on water” using a charge-tagged palladium complex. NEW J CHEM 2014. [DOI: 10.1039/c4nj00285g] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Lopes TO, da Silva Filho DA, Lapis AAM, de Oliveira HCB, Neto BAD. Designed non-symmetrical 4,7-pi-extended-2,1,3-benzothiadiazole derivatives: Synthesis guided by DFT predictions. J PHYS ORG CHEM 2013. [DOI: 10.1002/poc.3234] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Thiago O. Lopes
- Laboratory of Medicinal and Technological Chemistry and Laboratory of Complex Systems, Chemistry Institute; University of Brasilia (IQ-UnB); Brasilia Federal District Brazil
| | | | - Alexandre A. M. Lapis
- Department of Chemistry; Federal University of Fronteira do Sul, UFFS; 89813-140 Chapecó Santa Catarina Brazil
| | - Heibbe C. B. de Oliveira
- Laboratory of Medicinal and Technological Chemistry and Laboratory of Complex Systems, Chemistry Institute; University of Brasilia (IQ-UnB); Brasilia Federal District Brazil
| | - Brenno A. D. Neto
- Laboratory of Medicinal and Technological Chemistry and Laboratory of Complex Systems, Chemistry Institute; University of Brasilia (IQ-UnB); Brasilia Federal District Brazil
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27
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Rangel FC, Mamiya AA, de Oliveira HCB, Vieira FMC, Mundim KC. Alternative approach to calculate two-center overlap matrix through deformed exponential function. J Phys Chem A 2013; 117:6622-8. [PMID: 23815463 DOI: 10.1021/jp401631a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this work, we propose an alternative approach to evaluate two-center overlap integrals. It is computationally more efficient than the standard procedure and is based on the deformed exponential function. In the new procedure, the CPU time to calculate each element of the overlap matrix (Sμ,ν) is constant and independent of the number of Gaussian primitives (NG), whereas in the usual procedure this time increases, formally, with NG2. To evaluate the accuracy of the proposed methodology, we computed different molecular properties such as dipole moments, hardness values, atomic charges, multicenter bond indices, group indices, and some thermodynamic properties. In this work, all calculations were performed using a minimal STO-6G basis set and WTBS and the double-ζ Pople split-valence 6-31G basis set on the Hartree–Fock (HF) and post-HF approximations. The integrals were parametrized for the atoms of the first two rows of the periodic table. All calculations were performed in the general ab initio quantum chemistry package GAMESS, where the integrals were implemented.
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Affiliation(s)
- Fernando C Rangel
- Instituto de Química, Universidade de Brasília, 70919-970 Brasília (DF), Brazil
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Alvim HGO, de Lima TB, de Oliveira HCB, Gozzo FC, de Macedo JL, Abdelnur PV, Silva WA, Neto BAD. Ionic Liquid Effect over the Biginelli Reaction under Homogeneous and Heterogeneous Catalysis. ACS Catal 2013. [DOI: 10.1021/cs400291t] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
| | | | | | - Fabio C. Gozzo
- Institute of Chemistry, University of Campinas, Campinas, SP, Brazil
| | - Julio L. de Macedo
- Laboratory of Catalysis, Institute
of Chemistry, University of Brasília, P. O. Box 4478, CEP 70904970, Brasília, DF, Brasil
| | - Patricia V. Abdelnur
- Embrapa Agroenergia, PqEB s/no Avenida W3 Norte (final), Edifício Embrapa Agroenergia,
CEP: 70770-901, P. O. Box 40315
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Alvim HGO, Fagg EL, de Oliveira AL, de Oliveira HCB, Freitas SM, Xavier MAE, Soares TA, Gomes AF, Gozzo FC, Silva WA, Neto BAD. Probing deep into the interaction of a fluorescent chalcone derivative and bovine serum albumin (BSA): an experimental and computational study. Org Biomol Chem 2013; 11:4764-77. [PMID: 23680860 DOI: 10.1039/c3ob27331h] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the present manuscript, a novel fluorescent chalcone derivative is synthesized and its photophysical properties are fully characterized. The designed fluorophore is applied as a probe to study protein-dye interactions with bovine serum albumin. Circular dichroism gave interesting results on the thermodynamics of the interaction. NMR spectroscopy, especially relaxation measurements, revealed the atoms in the chalcone derivative that interacts with the protein upon binding. Molecular docking calculations indicate that the most favourable binding sites are near the two tryptophan residues. Furthermore, ab initio and DFT calculations offer insights into the reactivity and physicochemical properties of this novel fluorophore.
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Affiliation(s)
- Haline G O Alvim
- Laboratory of Medicinal and Technological Chemistry, University of Brasilia (IQ-UnB), Campus Universitário Darcy Ribeiro, CEP 70904970, P.O. Box 4478, Brasilia-DF, Brazil
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Ramos LM, Guido BC, Nobrega CC, Corrêa JR, Silva RG, de Oliveira HCB, Gomes AF, Gozzo FC, Neto BAD. The Biginelli reaction with an imidazolium-tagged recyclable iron catalyst: kinetics, mechanism, and antitumoral activity. Chemistry 2013; 19:4156-68. [PMID: 23460474 DOI: 10.1002/chem.201204314] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Indexed: 11/10/2022]
Abstract
The present work describes the synthesis, characterization, and application of a new ion-tagged iron catalyst. The catalyst was employed in the Biginelli reaction with impressive performance. High yields have been achieved when the reaction was carried out in imidazolium-based ionic liquids (BMI⋅PF6, BMI⋅NTf2, and BMI⋅BF4), thus showing that the ionic-liquid effects play a role in the reaction. Moreover, the ion-tagged catalyst could be recovered and reused up to eight times without any noticeable loss in activity. Mechanistic studies performed by using high-resolution electrospray-ionization quadrupole-time-of-flight mass (HR-EI-QTOF) spectrometry and kinetic experiments indicate only one reaction pathway and rule out the other two possibilities under the development conditions. The theoretical calculations are in accordance with the proposed mechanism of action of the iron catalyst. Finally, the 37 dihydropyrimidinone derivatives, products of the Biginelli reaction, had their cytotoxicity evaluated in assays against MCF-7 cancer cell linages with encouraging results of some derivatives, which were virtually non-toxic against healthy cell linages (fibroblasts).
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Affiliation(s)
- Luciana M Ramos
- Laboratory of Medicinal and Technological Chemistry, University of Brasilia (IQ-UnB), Campus Universitário Darcy Ribeiro, CEP 70904970, P.O.Box 4478, Brasilia-DF, Brazil
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31
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Lima JMM, Silva VHC, Camargo LTFM, de Oliveira HCB, Camargo AJ. Theoretical investigation on ruthenium tetraazaporphyrin as potential nitric oxide carrier in biological systems. J Mol Model 2013; 19:1727-37. [DOI: 10.1007/s00894-012-1715-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Accepted: 11/27/2012] [Indexed: 12/01/2022]
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32
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Neto BAD, Viana BFL, Rodrigues TS, Lalli PM, Eberlin MN, da Silva WA, de Oliveira HCB, Gatto CC. Condensed, solution and gas phase behaviour of mono- and dinuclear 2,6-diacetylpyridine (dap) hydrazone copper complexes probed by X-ray, mass spectrometry and theoretical calculations. Dalton Trans 2013; 42:11497-506. [DOI: 10.1039/c3dt50594d] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Ramos LM, Ponce de Leon y Tobio AY, dos Santos MR, de Oliveira HCB, Gomes AF, Gozzo FC, de Oliveira AL, Neto BAD. Mechanistic studies on Lewis acid catalyzed Biginelli reactions in ionic liquids: evidence for the reactive intermediates and the role of the reagents. J Org Chem 2012; 77:10184-93. [PMID: 23101501 DOI: 10.1021/jo301806n] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
This paper describes the use of common Lewis acids supported in imidazolium-based ionic liquids as the catalysts to promote the Biginelli reaction. The ionic liquid effect and the reaction mechanism are discussed on the basis of nuclear magnetic resonance (NMR), electrospray ionization mass spectrometry (ESI-MS), and theoretical calculations. Indeed, the results showed that the ionic medium plays a fundamental role in the synthesis of biologically active dihydropyrimidinones due to the stabilization of the charged intermediates proposed in the mechanism. When conducted in an ionic liquid as solvent, the reaction mechanism is more complex than in other Lewis acid catalyzed Biginelli reactions.
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Affiliation(s)
- Luciana M Ramos
- Laboratory of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute, Campus Universitário Darcy Ribeiro, CEP 70904-970, P.O. Box 4478, Brasília DF, Brazil
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D. Neto BA, Corrêa JR, Carvalho PHPR, Santos DCBD, Guido BC, Gatto CC, Oliveira HCBD, Fasciotti M, Eberlin MN, Silva Jr. END. Selective and efficient mitochondrial staining with designed 2,1,3-benzothiadiazole derivatives as live cell fluorescence imaging probes. J BRAZIL CHEM SOC 2012. [DOI: 10.1590/s0103-50532012000400024] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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35
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Neto BAD, Carvalho PHPR, Santos DCBD, Gatto CC, Ramos LM, Vasconcelos NMD, Corrêa JR, Costa MB, de Oliveira HCB, Silva RG. Synthesis, properties and highly selective mitochondria staining with novel, stable and superior benzothiadiazole fluorescent probes. RSC Adv 2012. [DOI: 10.1039/c1ra00701g] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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