Search Results - "Faustino, W.M."

Theoretical modeling of thermally activated luminescence quenching through charge transfer states in lanthanide complexes by Faustino, W.M., Malta, O.L., de Sá, G.F.

“…A theoretical approach for the luminescence thermal quenching through ligand-to-metal charge transfer (LMCT) states in lanthanide compounds is developed…”
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Positronium formation in europium(III) coordination compounds by Faustino, W.M., de Sá, G.F., Malta, O.L., Soares, M.C.F., Windmöller, D., Machado, J.C.

“…Positronium formation in Eu(III) complexes was detected. For the complexes investigated in the present work, rough correlations between the luminescence…”
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Positron annihilation in triphenylphosphine oxide complexes: Positronium inhibition mechanism involving excitation of charge transfer states by Faustino, W.M., de Sá, G.F., Malta, O.L., Magalhães, W.F., Machado, J.C.

“…Positronium formation in triphenylphosphine oxide and its lanthanide and hydrogen peroxide complexes was characterized. The low positronium probability…”
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Synthesis, separation and configuration determination of diastereoisomers of ( R, S)-1-methyl-3-[3-(aryl)-1,2,4-oxadiazol-5-yl] propyl 2,3-dideoxy-α- d- erythro-hex-2-enopyranosides by Srivastava, Rajendra M., de Freitas Filho, João R., da Silva, Maria José, de Melo Souto, Suzana C., Carpenter, Gene B., Faustino, W.M.

“…For synthesizing title compounds, first we carried out the Ferrier's rearrangement involving tri- O-acetyl- d-glucal 1 and alcohols 2a– e using Montmorillonite…”
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First hyperpolarizability of the molecular excited states: Calculations for p-nitroaniline and comparison with experiments by Faustino, W.M., Petrov, D.V.

“…We calculated the first hyperpolarizability of the molecules with some fraction of both ground and excited state populations. We used a numerical procedure…”
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Hyper-Rayleigh scattering in p-nitroaniline with excited states obtained by 355 nm optical pump by Petrov, D.V, Faustino, W.M

“…We report what we believe to be the first experimental demonstration of the dependence of hyper-Rayleigh scattering (HRS) (fundamental wavelength of 1064 nm)…”
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Synthesis, mechanism of formation, and molecular orbital calculations of arylamidoximes by Srivastava, Rajendra M., Pereira, Maria C., Faustino, Wagner W. M., Coutinho, Kaline, dos Anjos, Janaína V., de Melo, Sebastião J.

“…A simple and easy synthesis of ten arylamidoximes from arylnitriles and hydroxylamine is described. The formation of the arylamides has been observed to a much…”
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Concerning the mechanism of formation of 3-phenyl-5-trifluoromethyl-1,2,4-oxadiazole from O-vinylbenzamidoxime and trifluoroacetic anhydride in the presence of pyridine by Srivastava, Rajendra M., Faustino, W.M.

“…A more appropriate mechanism of formation of the title compound from O-vinylbenzamidoxime and trifluoroacetic anhydride in pyridine is suggested. Careful…”
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Design of ligands to obtain lanthanide ion complexes displaying high quantum efficiencies of luminescence using the sparkle model by Faustino, W.M, Rocha, G.B, Gonçalves e Silva, F.R, Malta, O.L, de Sá, G.F, Simas, A.M

“…In this paper we exemplify how to use our sparkle model for the calculation of lanthanide complexes (SMLC-AM1-INDO/S-CI) together with Fermi's golden rule with…”
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