Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Simone M. C. Gonçalves"'
Publikováno v:
ACS Omega, Vol 2, Iss 10, Pp 6786-6794 (2017)
Externí odkaz:
https://doaj.org/article/d1265e797d054adeaeb907a7a51e4b81
Publikováno v:
ACS Omega, Vol 2, Iss 10, Pp 6786-6794 (2017)
ACS Omega
ACS Omega
We advance the concept that a single efficient antenna ligand substituted in or added to an otherwise weakly luminescent europium complex is enough to significantly boost its luminescence. Our results, on the basis of photophysical measurements on 5
Autor:
Simone M. C. Gonçalves, Vanessa F. C. Santos, Alfredo M. Simas, Anderson I. S. Silva, Nathalia B. D. Lima
Publikováno v:
RSC Advances. 7:20811-20823
We advance the novel general idea that thermodynamic quantities of chemical reactions from RM1 quantum chemical calculations, regarded as figures of merit, are useful to the chemist studying europium complexes. Faced with several different plausible
Publikováno v:
Inorganic chemistry. 58(5)
A luminescence quantum yield of 7.8% was obtained for a quaternary mixed-ligand samarium complex; this value is higher than those previously reported in the literature for such complexes in solution. The complex was prepared by microwave-assisted syn
Synthesis of mixed ligand europium complexes: Verification of predicted luminescence intensification
Publikováno v:
Journal of Luminescence. 170:505-512
Mixed ligand europium complexes are predicted to be more luminescent than what would be expected from their corresponding repeating ligand compounds according to a conjecture recently advanced by our research group; a conjecture that has already been
Autor:
Nathalia B. D. Lima, Vanessa F. C. Santos, Anderson I. S. Silva, Alfredo M. Simas, Simone M. C. Gonçalves
Publikováno v:
RSC Advances. 6:90934-90943
We demonstrate in a general and comprehensive manner that a substantial enhancement of luminescence in europium complexes can be achieved by increasing ionic ligand diversity. For the complexes studied, the measured boosts in the quantum efficiency o
Autor:
Edmundo Pessoa de Almeida Lopes, Ricardo O. Silva, Simone M. C. Gonçalves, I. M. Moura, Alfredo M. Simas, L. C. A. Koury, Michele M. G. Godoy, Fernando Hallwass
Publikováno v:
Journal of Viral Hepatitis. 17:854-858
SUMMARY. Metabonomics based on nuclear magnetic resonance (NMR) can reveal the profile of endogenous metabolites of low molecular weight in biofluids related to disease. The profile is identified a metabolic fingerprint like from the pathological pro
Publikováno v:
Journal of the Brazilian Chemical Society, Volume: 21, Issue: 11, Pages: 2023-2026, Published: 2010
Journal of the Brazilian Chemical Society v.21 n.11 2010
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society v.21 n.11 2010
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
In this article, we demonstrate that (S)-3-phenyl-2-(selenophenyl)propan-1-ol can be successfully employed as chiral derivatizing agent for enantiomeric excess determination of chiral carboxylic acid substrates via 77Se NMR. The required derivatives
Publikováno v:
Magnetic Resonance in Chemistry. 45:830-834
In this work, we have analysed the tendency of two beta-carboline derivatives, harmane and norharmane, in the formation of hydrogen bonds. We obtained the (1)H and (13)C NMR spectra of different mixtures of these derivatives with acetic acid (AcOH) i
Autor:
Simone M. C. Gonçalves, Alfredo M. Simas, José Diogo L. Dutra, Nathalia B. D. Lima, Ricardo O. Freire
Publikováno v:
Scientific Reports
The spontaneous emission coefficient, Arad, a global molecular property, is one of the most important quantities related to the luminescence of complexes of lanthanide ions. In this work, by suitable algebraic transformations of the matrices involved