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Waked D, Rodrigues ACB, Silva TM, Yariwake VY, Farhat SCL, Veras MM. Effect of chronic exposure to fine particulate matter on cardiac tissue of NZBWF1 mice. Int J Exp Pathol 2023; 104:177-187. [PMID: 36918483 PMCID: PMC10349255 DOI: 10.1111/iep.12473] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 02/07/2023] [Accepted: 02/07/2023] [Indexed: 03/16/2023] Open
Abstract
Epidemiological and toxicological studies have shown that inhalation of particulate matter (PM) is associated with development of cardiovascular diseases. Long-term exposure to PM may increase the risk of cardiovascular events and reduce life expectancy. Systemic lupus erythematosus (SLE) is a chronic inflammatory disease, autoimmune in nature, that is characterized by the production of autoantibodies that affects several organs, including the heart. Air pollution - which can be caused by several different factors - may be one of the most important points both at the onset and the natural history of SLE. Therefore this study aims to investigate whether exposure to air pollution promotes increased inflammation and cardiac remodelling in animals predisposed to SLE. Female NZBWF1 mice were exposed to an environmental particle concentrator. Aspects related to cardiac remodelling, inflammation and apoptosis were analysed in the myocardium. Body weight gain, cardiac trophism by heart/body weight ratio, relative area of cardiomyocytes and the fibrotic area of cardiac tissue were evaluated during the exposure period. Animals exposed to PM2.5 showed increased area of cardiomyocytes, and area of fibrosis; in addition, we observed an increase in IL-1 and C3 in the cardiac tissue, demonstrating increased inflammation. We suggest that air pollution is capable of promoting cardiac remodelling and increased inflammation in animals predisposed to SLE.
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Affiliation(s)
- Dunia Waked
- Laboratory of Environmental and Experimental Pathology, Department of Pathology, School of MedicineUniversity of São PauloSão PauloBrazil
| | - Ana Clara B. Rodrigues
- Laboratory of Environmental and Experimental Pathology, Department of Pathology, School of MedicineUniversity of São PauloSão PauloBrazil
| | - Thamires Moraes Silva
- Laboratory of Environmental and Experimental Pathology, Department of Pathology, School of MedicineUniversity of São PauloSão PauloBrazil
| | - Victor Yuji Yariwake
- Laboratory of Environmental and Experimental Pathology, Department of Pathology, School of MedicineUniversity of São PauloSão PauloBrazil
| | - Sylvia Costa Lima Farhat
- Laboratory of Environmental and Experimental Pathology, Department of Pathology, School of MedicineUniversity of São PauloSão PauloBrazil
- Pediatric Rheumatology Unit, Children's Institute of Hospital das Clínicas, School of MedicineUniversity of São PauloSão PauloBrazil
| | - Mariana Matera Veras
- Laboratory of Environmental and Experimental Pathology, Department of Pathology, School of MedicineUniversity of São PauloSão PauloBrazil
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Rodrigues ACB, Lopes SMM, Cunha C, Braz J, Pinho E Melo TMVD, Seixas de Melo JS, Pineiro M. The role of solvents and concentrations in the properties of oxime bearing A 2B corroles. Phys Chem Chem Phys 2023; 25:10263-10277. [PMID: 36919842 DOI: 10.1039/d2cp05941j] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
A comprehensive study on the electronic spectral, photophysical and acid-base properties of phenyl- and methyl-oxime corrole derivatives and of triphenylcorrole (model corrole) has been performed, aiming to shed light on the existing species in the ground and excited states. Solvents and corrole concentration are found to govern the properties of the studied compounds and are determinants of their applicability in in vivo studies. In THF, the neutral corrole has two tautomeric forms (T1 and T2). In DMSO, the deprotonated form shows a characteristic long-wavelength Q band slightly shifted to blue when compared with the T1 tautomer and a higher fluorescence quantum yield. In ACN, with the increase of the corrole concentration formation of an aggregate due to homoconjugation (with dimer characteristics) is observed, and pioneeringly reported using UV-Vis and fluorescence studies and confirmed by carrying out titrations with TFA. The effect of the oxime group on the pK values of a corrole is found to influence the formation of a homoconjugate, namely by precluding its formation (at higher concentrations) when compared with the model corrole. TDDFT electronic quantum calculations support the experimental observations, namely the existence of tautomers and deprotonated species, with their respective electronic spectral features, further allowed proposing a structure for the homoconjugate complex in ACN. The characteristics of the oxime-corroles, namely a pK of ∼ 5, absorption and emission at ca. 650 nm and solvent dependent properties, make them good candidates for their use in biological systems either as probes, sensors, or as new sensitizers for photodynamic therapy.
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Affiliation(s)
- Ana Clara B Rodrigues
- University of Coimbra, CQC-IMS, Department of Chemistry, Rua Larga, 3004-535 Coimbra, Portugal.
| | - Susana M M Lopes
- University of Coimbra, CQC-IMS, Department of Chemistry, Rua Larga, 3004-535 Coimbra, Portugal.
| | - Carla Cunha
- University of Coimbra, CQC-IMS, Department of Chemistry, Rua Larga, 3004-535 Coimbra, Portugal.
| | - João Braz
- University of Coimbra, CQC-IMS, Department of Chemistry, Rua Larga, 3004-535 Coimbra, Portugal.
| | | | - J Sérgio Seixas de Melo
- University of Coimbra, CQC-IMS, Department of Chemistry, Rua Larga, 3004-535 Coimbra, Portugal.
| | - Marta Pineiro
- University of Coimbra, CQC-IMS, Department of Chemistry, Rua Larga, 3004-535 Coimbra, Portugal.
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Wetterling D, Forster M, B Rodrigues AC, Seixas de Melo JS, Scherf U. Cationic Diazapentacenium Polymers Made in a Sequence of CN Cross Coupling Polymerization and Acid-Mediated Postpolymerization Cyclization. Macromol Rapid Commun 2021; 42:e2100370. [PMID: 34254716 DOI: 10.1002/marc.202100370] [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: 06/14/2021] [Revised: 07/09/2021] [Indexed: 11/06/2022]
Abstract
Polycationic stepladder polymers containing 5,12-diazapentacenium bistriflate repeat units are made in a two-step sequence of a carbon-nitrogen cross coupling polymerization and subsequent postpolymerization cyclization. The deeply colored products show a rather weak conjugative interaction between the dicationic diazapentacenium repeat units along the polymer chains.
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Affiliation(s)
- Dario Wetterling
- Macromolecular Chemistry group (buwMakro) and Wuppertal Center for Smart Materials and Systems (CM@S), Gauss-Str. 20, Bergische Universität Wuppertal, D-42119, Wuppertal, Germany
| | - Michael Forster
- Macromolecular Chemistry group (buwMakro) and Wuppertal Center for Smart Materials and Systems (CM@S), Gauss-Str. 20, Bergische Universität Wuppertal, D-42119, Wuppertal, Germany
| | - Ana Clara B Rodrigues
- CQC, Department of Chemistry, Rua Larga, University of Coimbra, Coimbra, 3004-535, Portugal
| | | | - Ullrich Scherf
- Macromolecular Chemistry group (buwMakro) and Wuppertal Center for Smart Materials and Systems (CM@S), Gauss-Str. 20, Bergische Universität Wuppertal, D-42119, Wuppertal, Germany
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4
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Rodrigues ACB, Wetterling D, Scherf U, Seixas de Melo JS. Tuning J-aggregate Formation and Emission Efficiency in Cationic Diazapentacenium Dyes. Chemistry 2021; 27:7826-7830. [PMID: 33836115 PMCID: PMC8252373 DOI: 10.1002/chem.202100123] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 01/12/2021] [Indexed: 11/07/2022]
Abstract
Enhancement of the luminescence efficiency of two new diazapentacenium salts (D1 and D2) of more than 55 for D1 and 22 times for D2) in poor solvents, acetonitrile and/or dichloromethane, was observed and rationalized as formation of emissive J-aggregates. Both compounds displaying 4-n-decylphenyl substituents at the 7,14-carbons and phenyl (D1) or 2,6-difluorophenyl (D2) substituents at the quaternary nitrogen atoms in 5,12-positions have been synthetized in a two-step procedure involving a two-fold Buchwald-Hartwig-type CN cross-coupling and an electrophilic Friedel-Crafts-type cyclization. The optical properties of the dicationic diazapentacenium salts in various solvents and in thin films have been investigated by steady-state and time-resolved absorption and photoluminescence spectroscopies. In thin films and in good solvents, isolated molecules coexist with aggregates. Nonetheless, D1 is seven times more emissive than D2, reflecting a higher J-aggregate contribution in the former.
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Affiliation(s)
- Ana Clara B Rodrigues
- Department of Chemistry, CQC, University of Coimbra, Rua Larga, 3004-535, Coimbra, Portugal
| | - Dario Wetterling
- Macromolecular Chemistry Group (buwmakro) and Institute for Polymer Technology, Bergische Universitat Wuppertal, Gauss-Str. 20, 42097, Wuppertal, Germany
| | - Ullrich Scherf
- Macromolecular Chemistry Group (buwmakro) and Institute for Polymer Technology, Bergische Universitat Wuppertal, Gauss-Str. 20, 42097, Wuppertal, Germany
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Rodrigues ACB, Seixas de Melo JS. Aggregation-Induced Emission: From Small Molecules to Polymers-Historical Background, Mechanisms and Photophysics. Top Curr Chem (Cham) 2021; 379:15. [PMID: 33725207 DOI: 10.1007/s41061-021-00327-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 02/12/2021] [Indexed: 12/26/2022]
Abstract
The enhancement of photoluminescence through formation of molecular aggregates in organic oligomers and conjugated organic polymers is reviewed. A historical contextualization of aggregation-induced emission (AIE) phenomena is presented. This includes the loose bolt or free rotor effect and J-aggregation phenomena, and discusses their characteristic features, including structures and mechanisms. The basis of both effects is examined in key molecules, with a particular emphasis on the AIE effect occurring in conjugated organic polymers with a polythiophene (PT) skeleton with triphenylethylene (TPE) units. Rigidification of the excited state structure is one of the defining conditions required to obtain AIE, and thus, by changing from a flexible ground state to rigid (quinoidal-like) structures, oligo and PTs are among the most promising emerging molecules alongside with the more extensively used TPE derivatives. Molecular structures moving away from the domination of aggregation-caused quenching to AIE are presented. Future perspectives for the rational design of AIEgen structures are discussed.
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Affiliation(s)
- Ana Clara B Rodrigues
- Department of Chemistry, Coimbra Chemistry Centre, University of Coimbra, 3004-535, Coimbra, Portugal
| | - J Sérgio Seixas de Melo
- Department of Chemistry, Coimbra Chemistry Centre, University of Coimbra, 3004-535, Coimbra, Portugal.
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B. Rodrigues AC, Pina J, Seixas de Melo JS. Structure-relation properties of N-substituted phenothiazines in solution and solid state: Photophysical, photostability and aggregation-induced emission studies. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113966] [Citation(s) in RCA: 9] [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] [Indexed: 01/29/2023]
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Silva GTM, da Silva KM, Silva CP, Rodrigues ACB, Oake J, Gehlen MH, Bohne C, Quina FH. Highly fluorescent hybrid pigments from anthocyanin- and red wine pyranoanthocyanin-analogs adsorbed on sepiolite clay. Photochem Photobiol Sci 2019; 18:1750-1760. [PMID: 31107486 DOI: 10.1039/c9pp00141g] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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
Flavylium cations serve as models for the chemical and photochemical reactivity of anthocyanins, the natural plant pigment responsible for many of the red, blue and purple colors of fruits and flowers. Likewise, pyranoflavylium cations serve as models of the fundamental chromophoric moiety of pyranoanthocyanins, molecules that can form from reactions of grape anthocyanins in red wines during their maturation. In the present work, hybrid pigments are prepared by the adsorption of a series of five synthetic flavylium cations (FL) and five synthetic pyranoflavylium cations (PFL) on sepiolite clay (SEP). The FL are smaller in size than the PFL, but both can in principle fit into the tunnels and/or external grooves (with dimensions of 3.7 × 10.6 Å) of SEP. Measurements of the fluorescence quantum yields of the adsorbed dyes indicate that they are at least as fluorescent as in acidic acetonitrile solution, and in a few cases substantially more fluorescent. The observation of biexponential fluorescence decays is consistent with emission from dye molecules adsorbed at two distinct sites, presumably tunnels and grooves. These hybrid materials also have improved properties in terms of stability of the color in contact with pH 10 aqueous solution and resistance to thermal degradation of the dye. SEP thus appears to be a promising substrate for the development of highly fluorescent flavylium or pyranoflavylium cation-derived hybrid pigments with improved color and thermal stability.
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Affiliation(s)
- Gustavo Thalmer M Silva
- Instituto de Química, Universidade de São Paulo, Av. Lineu Prestes 748, Cidade Universitária, São Paulo 05508-000, Brazil.
| | - Karen M da Silva
- Instituto Federal de Educação, Ciência e Tecnologia de São Paulo, Campus São Paulo, 01109-010 São Paulo, Brazil
| | - Cassio P Silva
- Instituto de Química, Universidade de São Paulo, Av. Lineu Prestes 748, Cidade Universitária, São Paulo 05508-000, Brazil.
| | | | - Jessy Oake
- Department of Chemistry and Centre for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, PO Box 1700 STN CSC, Victoria, BC, CanadaV8 W 2Y2
| | - Marcelo H Gehlen
- Instituto de Química de São Carlos, Universidade de São Paulo, 13566-590 São Carlos, SP, Brazil
| | - Cornelia Bohne
- Department of Chemistry and Centre for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, PO Box 1700 STN CSC, Victoria, BC, CanadaV8 W 2Y2
| | - Frank H Quina
- Instituto de Química, Universidade de São Paulo, Av. Lineu Prestes 748, Cidade Universitária, São Paulo 05508-000, Brazil.
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Affiliation(s)
| | - João Pina
- CQC, Department of Chemistry, University of Coimbra, P3004-535 Coimbra, Portugal
| | - Wenyue Dong
- Macromolecular Chemistry Group (buwmakro) and Institute for Polymer Technology, Bergische Universitat Wuppertal, Gauss-Str. 20, D-42097 Wuppertal, Germany
| | - Michael Forster
- Macromolecular Chemistry Group (buwmakro) and Institute for Polymer Technology, Bergische Universitat Wuppertal, Gauss-Str. 20, D-42097 Wuppertal, Germany
| | - Ullrich Scherf
- Macromolecular Chemistry Group (buwmakro) and Institute for Polymer Technology, Bergische Universitat Wuppertal, Gauss-Str. 20, D-42097 Wuppertal, Germany
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9
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Barbeiro CS, Vasconcelos SNS, Zukerman-Schpector J, Caracelli I, Pimenta DC, Rodrigues ACB, Fernandes AS, Correra TC, Bastos EL, Stefani HA. Chlorinated 2-hydroxynaphthalenoxazolines: Synthesis, Reaction Mechanism and Fluorescence Properties. ChemistrySelect 2016. [DOI: 10.1002/slct.201601526] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Cristiane S. Barbeiro
- Departamento de Farmácia, Faculdade de Ciências Farmacêuticas; Universidade de São Paulo; São Paulo, SP Brazil
| | - Stanley N. S. Vasconcelos
- Departamento de Farmácia, Faculdade de Ciências Farmacêuticas; Universidade de São Paulo; São Paulo, SP Brazil
| | - Júlio Zukerman-Schpector
- Laboratório de Cristalografia, Estereodinâmica e Modelagem Molecular, Departamento de Química; Universidade Federal de São Carlos; São Carlos, SP Brazil
| | - Ignez Caracelli
- BioMat-Departamento de Física; Universidade Federal de São Carlos; São Carlos, SP Brazil
| | - Daniel C. Pimenta
- Departamento de Bioquímica e Biofísica; Instituto Butantã; São Paulo, SP Brazil
| | - Ana Clara B. Rodrigues
- Departamento de Química Fundamental, Instituto de Química; Universidade de São Paulo; São Paulo, SP Brazil
| | - André S. Fernandes
- Departamento de Química Fundamental, Instituto de Química; Universidade de São Paulo; São Paulo, SP Brazil
| | - Thiago C. Correra
- Departamento de Química Fundamental, Instituto de Química; Universidade de São Paulo; São Paulo, SP Brazil
| | - Erick L. Bastos
- Departamento de Química Fundamental, Instituto de Química; Universidade de São Paulo; São Paulo, SP Brazil
| | - Hélio A. Stefani
- Departamento de Farmácia, Faculdade de Ciências Farmacêuticas; Universidade de São Paulo; São Paulo, SP Brazil
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Lima FS, Cuccovia IM, Horinek D, Amaral LQ, Riske KA, Schreier S, Salinas RK, Bastos EL, Pires PAR, Bozelli JC, Favaro DC, Rodrigues ACB, Dias LG, El Seoud OA, Chaimovich H. Effect of counterions on the shape, hydration, and degree of order at the interface of cationic micelles: the triflate case. Langmuir 2013; 29:4193-4203. [PMID: 23473070 DOI: 10.1021/la304658e] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Specific ion effects in surfactant solutions affect the properties of micelles. Dodecyltrimethylammonium chloride (DTAC), bromide (DTAB), and methanesulfonate (DTAMs) micelles are typically spherical, but some organic anions can induce shape or phase transitions in DTA(+) micelles. Above a defined concentration, sodium triflate (NaTf) induces a phase separation in dodecyltrimethylammonium triflate (DTATf) micelles, a phenomenon rarely observed in cationic micelles. This unexpected behavior of the DTATf/NaTf system suggests that DTATf aggregates have unusual properties. The structural properties of DTATf micelles were analyzed by time-resolved fluorescence quenching, small-angle X-ray scattering, nuclear magnetic resonance, and electron paramagnetic resonance and compared with those of DTAC, DTAB, and DTAMs micelles. Compared to the other micelle types, the DTATf micelles had a higher average number of monomers per aggregate, an uncommon disk-like shape, smaller interfacial hydration, and restricted monomer chain mobility. Molecular dynamic simulations supported these observations. Even small water-soluble salts can profoundly affect micellar properties; our data demonstrate that the -CF3 group in Tf(-) was directly responsible for the observed shape changes by decreasing interfacial hydration and increasing the degree of order of the surfactant chains in the DTATf micelles.
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Affiliation(s)
- Filipe S Lima
- Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
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Dantoni P, Rodrigues ACB, Matsuda MMN, Coichev N. Effect of some surfactants on the chemiluminescent reactions of bis(2,4,6-trichlorophenyl)oxalate and bis(2-nitrophenyl)oxalate with hydrogen peroxide. CAN J CHEM 2012. [DOI: 10.1139/v2012-025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The chemiluminescent reactions of bis(2,4,6-trichlorophenyl)oxalate (TCPO) and bis(2-nitrophenyl)oxalate (2-NPO) with hydrogen peroxide in acetonitrile/water micellar systems (anionic, cationic, and non-ionic) and γ-cyclodextrin were studied in the presence of fluoranthene or 9,10-diphenylanthracene, imidazole, and two buffer solutions, HTRIS+/TRIS and H2PO4–/HPO42–. The relative chemiluminenscence (CL) intensity is higher in the presence of the cationic (DDAB, CTAC, DODAC, and OTAC), anionic (SDS), and non-ionic (Tween 80) surfactants. In the presence of some non-ionic surfactants (Brij 35, Brij 76, and Tween 20), the CL intensity was partially quenched compared with the reaction with no surfactant. The sensitivity for hydrogen peroxide determination in the range 0.01 × 10−4 to 1.0 × 10−4 mol L–1, considering the slope of the calibration curves (maximum peak height of CL vs. concentration), improved with the introduction of DDAH, CTAB, and SDS in HTRIS+/TRIS buffer.
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Affiliation(s)
- Patrícia Dantoni
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, R. Santa Adélia, 166, CEP 09210-270, Santo André, SP, Brazil
| | - Ana Clara B. Rodrigues
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, R. Santa Adélia, 166, CEP 09210-270, Santo André, SP, Brazil
| | - Margareth Mie N. Matsuda
- Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN/SP, Diretoria de Radio Farmácia), Av. Prof. Lineu Prestes, 2242, CEP 05508-900, São Paulo, SP, Brazil
| | - Nina Coichev
- Instituto de Química. Universidade de São Paulo, CP 26077, CEP 05513-970, São Paulo, SP, Brazil
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