Zobrazeno 1 - 10
of 132
pro vyhledávání: '"Gaston Vermeersch"'
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 208:180-185
New p -fluoro-substituted indeno-fused 3,3-diphenyl-3 H -naphtho[2,1- b ]pyrans were prepared and their photochromic properties studied by UV–vis and NMR spectroscopy. At room temperature UV irradiation of compound 6 , presenting the indene ring fu
Publikováno v:
Tetrahedron. 65:5369-5376
New 4-(2,2-diphenylethenyl)naphthopyrans were synthesized and their photochromic behaviour in solution were studied under continuous UV light irradiation conditions. Although only one coloured photoproduct was expected to be formed, due to the naphth
Autor:
Pascal Odou, Cécile Danel, Claude Vaccher, Jean-Paul Bonte, Bertrand Décaudin, Gaston Vermeersch, Albane Brunel, Damien Lannoy, Nathalie Azaroual
Publikováno v:
Tetrahedron: Asymmetry. 20:1125-1131
The configurational stability of 9-hydroxyrisperidone, an atypical antipsychotic, was studied under acidic, basic and physiological conditions. The analysis of 9-hydroxyrisperidone was performed using a recently validated chiral capillary electrophor
Autor:
Jean François Wiart, Nathalie Azaroual, Camille Richeval, Michel Lhermitte, Luc Humbert, Gaston Vermeersch, Bernard Cartigny, Michel Imbenotte
Publikováno v:
Annales de Toxicologie Analytique. 21:159-165
Objectifs: Suite a un acte suicidaire, une femme de 54 ans est retrouvee morte a son domicile. Dans un premier temps, seul un echantillon de sang a ete preleve et envoye au laboratoire. En fait, a proximite du corps avaient ete retrouves une bouteill
Autor:
Valérie Molinier, Nathalie Azaroual, Anne-Gaëlle Fournial, Gaston Vermeersch, Jean-Marie Aubry
Publikováno v:
Colloids and Surfaces A: Physicochemical and Engineering Aspects. 331:16-24
High resolution 1 H and 13 C NMR were used to characterise complex mixtures of industrial polyoxyethylated surfactants of the C i E j series. A progressive methodology was applied to analyse mixtures of monodisperse surfactants of increasing complexi
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 200:68-73
Bis-capped DAD H-bonding triazine units have been designed and synthesized, the two masking building blocks being 3,3-diphenyl-3H-naphtho[2,1-b]pyrans. Upon photoirradiation, the ring opening of both photochromic units leads to the formation of a fiv
Autor:
Gaston Vermeersch, Maria A. Salvador, Stéphanie Delbaere, Jérôme Berthet, Jean-Claude Micheau, M. Manuel Oliveira, Luis M. Carvalho, Paulo J. Coelho
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 198:242-249
New N-substituted benzopyranocarbazoles were synthesized and their photochromic properties, under continuous near-UV irradiation, are described. Besides a remarkable sensitiveness to solar light, N-methyl and N-benzyl derivatives give rise to particu
Autor:
Stéphanie Delbaere, Gaston Vermeersch
Publikováno v:
Journal of Photochemistry and Photobiology C: Photochemistry Reviews. 9:61-80
Despite its poor time-resolution and low sensitivity compared with classical spectrophotometric methods, modern NMR is now a highly developed spectroscopy technique, appropriate for photochromism studies owing to its high spectral resolution and two-
Publikováno v:
Journal of Physical Organic Chemistry. 20:872-877
A series of 3,3-diphenyl-3H-naphtho[2,1-b]pyrans substituted on 5-position by various nitrogenated functional groups has been synthesized. The photochromic reaction between the pyranic closed form and their open forms has been studied using NMR and U
Autor:
Gaston Vermeersch, T. Couesnon, Jean Aubard, Stéphanie Delbaere, François Maurel, S. Lau Truong, R. Dubest
Publikováno v:
Journal of Physical Organic Chemistry. 20:944-952
Nuclear Magnetic Resonance (NMR), Surface-Enhanced Resonance Raman Scattering (SERRS), and Density Functional Theory (DFT) were used to study 8-substituted acetylene- and thienylacetylene-diphenylnaphthopyran photochromic compounds. The purpose of th