Mercredi 1er mars à 9 h 30 dans l'amphithéâtre du Collège Doctoral Européen (Université de Strasbourg, Campus de l’Esplanade). Titre : "Systèmes antioxydants versus prooxydants lors d’évènements dermatologiques : Nouvelle approche par RPE pour étudier les espèces radicalaires induites par des xénobiotiques dans la peau" Cette thèse a été effectuée sous la direction du Dr. Elena GIMÉNEZ-ARNAU...[more]
Abstract 3,3',3''-(Benzene-1,3,5-triyl)tris(1-phenyl-1H-benzo[e][1], [2], [4]triazin-4-yl) (1) is a C3-symmetrical triradical comprised of three Blatter radical units connected at the 1, 3, 5 positions of a central trimethylenebenzene core. This triradical has an excellent air, moisture, and thermal stability. Single-crystal XRD indicates that triradical 1 adopts a propeller-like geometry with...[more]
Abstract Potential inversion refers to the situation where a protein cofactor or a synthetic molecule can be oxidized or reduced twice in a cooperative manner; that is, the second electron transfer is easier than the first. This property is very important regarding the catalytic mechanism of enzymes that bifurcate electrons and the properties of bidirectional redox molecular catalysts that...[more]
Abstract Two novel compounds isolated from an amber sample from the Santonian of Piolenc (Vaucluse, SE France) were identified using nuclear magnetic resonance and high-resolution mass spectrometry as sulfurized analogues of diterpenic acids from the isopimaric series originating from ancient conifers possibly related to the Cupressaceae family. These two compounds are members of a diterpenoid...[more]
Abstract We report the synthesis of new vanadyl porphyrins bearing peripheral coordination sites. By using palladium(II) or platinum(II) as connecting ions, porphyrin dimers were isolated and characterized by X-ray crystallography. These paramagnetic species were studied by electronic spectroscopy and continuous wave electron paramagnetic resonance (CW EPR). Large bathochromic shifts were...[more]
Abstract A mixed-ligand phthalocyanine/porphyrin yttrium(III) radical double-decker complex (DD) was synthesized using the custom-made 5,10,15-tris(4-methoxyphenyl)-20-(4-((trimethylsilyl)ethynyl)phenyl)porphyrin. The trimethylsilyl functionality was then used to couple two such complexes into biradicals through rigid tethers. Glaser coupling was used to synthesize a short-tethered biradical...[more]
Vendredi 03 février à 14h30 dans l'amphithéâtre Alain Beretz (nouveau patio) sur le campus Esplanade. Titre : "Systèmes bioinspirés redox-actifs pour le transfert électronique et les défis synthétiques" Cette thèse a été effectuée sous la direction du Pr. Marine Desage El-Murr (équipe OMECA) et du Pr. Sylvie Choua (équipe POMAM) , Institut de Chimie de Strasbourg, UMR 7177. [more]