Supramolecular Interaction
Mostrando 1-12 de 39 artigos, teses e dissertações.
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1. 2-(Pyridin-4yl)benzothiazole and Its Benzimidazole-Analogue: Biophysical and in silico Studies on Their Interaction with Urease and in vitro Anti-Helicobacter pylori Activities
In this study, the interaction between benzothiazole (BTA, concentration of a drug required for 50% inhibition in vitro (IC50) = 0.77 mM) and benzimidazole (BIA, IC50 = 2.14 mM) with urease was quantitatively assessed, using UV-Vis, molecular fluorescence, and circular dichroism. The results showed that both compounds interact with urease by a static fluores
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. Synthesis and Molecular Modeling Study of Two Bromo-Dimethoxybenzaldehydes
This work describes the synthesis, molecular structure, and packaging of the compounds 6-bromo-2,3-dimethoxybenzaldehyde (6-BRB) and 5-bromo-2,3-dimethoxybenzaldehyde (5 BRB). Characterization in the solid-state was carried out by X-ray diffraction, and the analysis of the interactions was described by the Hirshfeld surface, which helps in understanding the
Journal of the Brazilian Chemical Society. Publicado em: 2022
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3. Crystal Structure and Hirshfeld Surface Analysis of 1,4-Pentadien-3-one, (1E,4E)-1,5-diphenyl-2-(2,4-dinitrophenyl)hydrazone
The compound 1,4-pentadien-3-one,(1E,4E)-1,5-diphenyl-2-(2,4-dinitrophenyl)hydrazone presents the molecular formula C23H18N4O4 and was prepared in an undergraduate laboratory. The hydrazone was synthesized from the condensation between dibenzalacetone and 2,4-dinitrophenylhydrazine (DNPH) and crystallized employing water/acetone liquid-liquid diffusion. The
J. Braz. Chem. Soc.. Publicado em: 2021-02
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4. NO Photorelease from a Ruthenium Complex Assisted by Formation of a Supramolecular Dimer
This work presents the NO release from compound [Ru(biq)2(H2O)(NO)](PF6)3 (biq = 2,2’-biquinoline) with visible light irradiation (λirrad = 660 nm), assisted by the low-absorbing photosensitizer [Ru(biq)2Cl2]. The structure of both compounds were characterized by means of ESI-MS (electrospray ionization mass spectrometry). The NO+ stretching, ν(NO) = 199
J. Braz. Chem. Soc.. Publicado em: 2020-11
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5. Crystal Structure and 1H NMR Experimental and Theoretical Study of Conformers of 5-Methyl-1-(4’-methylphenylsulfonylamino)-1H-[1,2,3]-triazole-4-carboxylic Acid Ethyl Ester and 5-Methyl-1-(phenylsulfonylamino)-1H-[1,2,3]-triazole-4-carboxylic Acid Ethyl Ester
We reported experimental and theoretical investigation of conformers of 1,2,3-triazole derivatives, substances of exclusively synthetic origin, subject of extensive studies, because of several biological properties, such as antiviral, antimicrobial and antileishmaniasis. We reported molecular/supramolecular X-ray structures of antiophidian compounds I and II
J. Braz. Chem. Soc.. Publicado em: 2020-05
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6. SELF-ASSEMBLY AND HOST-GUEST BEHAVIORS OF A SUPRAMOLECULAR HELICATE FEII 2L3
A novel helicate complex [FeII2L3]4+ resulted from subcomponent self-assembly of a C3-symmetric triamine, 2-formylpyridine and octahedral iron(II) in CH3CN, which was confirmed by ESI-MS measurement. After the addition of selected planar aromatic molecules in CD3CN solution, shifts of 1H NMR signals of the helicate were investigated. The results revealed tha
Quím. Nova. Publicado em: 2018-05
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7. Supramolecular Approach to Decorate Multi-Walled Carbon Nanotubes with Negatively Charged Iron(II) Complexes
Poly(4-vinylpyridine) (P4VP) and P4VP/pentacyanoferrate(II) metallopolymer were used to suspend up to 1 mg mL-1 of multi-walled carbon nanotubes (MWCNT) in ethanol/water mixtures, providing noncolavent decoration of MWCNT with electroactive iron complex. The major interaction between polymer side chains and nanotubes is via π-π stacking, rather than charge
J. Braz. Chem. Soc.. Publicado em: 2017-01
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8. Supramolecular arrangements of an organometallic forming nanostructured films
Organometallic materials have become subject of intensive research on distinct technological applications. The Langmuir-Blodgett (LB) and Langmuir-Schaefer (LS) techniques have proven to be suitable to address challenges inherent to organic devices, in which the film properties can be tuned at molecular level. Here, we report on the supramolecular arrangemen
Mat. Res.. Publicado em: 2014-12
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9. Crystal structure, supramolecular self-assembly and interaction with DNA of a mixed ligand manganese(II) complex
Um complexo misto de manganês(II), [Mn(sal)(phen)2]ClO4 (1) (sal = salicilaldeído, phen = 1,10-fenantrolina), foi sintetizado e caracterizado por análise elementar e difração de raio-X de monocristais. A análise dos difratogramas revelou que o complexo 1 cristaliza no grupo espacial monoclínico P2(1)/n. A unidade assimétrica do complexo é composta d
Journal of the Brazilian Chemical Society. Publicado em: 2011-06
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10. Evaluation of supramolecularity of triazenide complexes mononuclear and binuclear of Ag(I) / Avaliação da Supramolecularidade de complexos triazenidos mononucleares e binucleares de Ag(I)
This work presents the synthesis and the investigation of the crystalline and molecular structure of five new mononuclear or binuclear complexes of Ag(I) with monocatenated triazenido ligands. The mononuclear complexes were synthesized from the binucleares complexes. With the addition stoichiometric of the ligand triphenylphosphine occurs the split of the bi
Publicado em: 2009
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11. 1H NMR techniques applied to Theobroma cacao metabolomics and to protein-ligands interactions / Tecnicas de RMN de ANTIPOT. 1H? aplicadas a metabolomica de Theobroma cacao e as interações proteinas - ligantes
Técnicas de RMN de H foram aplicadas no estudo de metabolômica de Theobroma cacao e interações proteínas ? ligantes. Esses dois tópicos são reportados em dois capítulos. O primeiro descreve a análise quantitativa por RMN de H de 8 metabolitos de Theobroma cacao endógenos ou produzidos durante a fermentação de 10 diferentes variedades resistentes
Publicado em: 2009
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12. Hybrid metal-organic nanocomposites based on vandium pentoxide / Nanocompósitos híbridos metal-orgânicos baseados em pentóxido de vanádio
Nanostructured systems based on the intercalation of molecular and supramolecular species into lamellar vanadium pentoxide xerogels are focused on this Thesis. The exciting characteristics of the supramolecular systems which are closely related to the nature, interaction and organization of the chemical species involved, have been exploited aiming their appl
Publicado em: 2008