Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Alain Leborgne"'
Publikováno v:
2013 13th Mediterranean Microwave Symposium (MMS).
In this paper a low noise trans-impedance amplifier (TIA) is presented between 4.4 GHz and 5 GHz in a GaAs pHEMT technology using a commercial photodiode. Using a narrow-band design's technique of photo-receiver basis on microwave approaches to desig
Autor:
Charbel, Achkar, Julien, Molina, Gerard, Sou, Fabien, Koskas, Yan, Haentjens, Georges, Alquie, Alain, Leborgne
Publikováno v:
2013 European Microelectronics Packaging Conference (EMPC); 2013, p1-6, 6p
Publikováno v:
European Polymer Journal. 17:1103-1106
Optically active poly-α-methyl-α-ethyl-β-propiolactones were prepared by stereoelective polymerization of the racemic monomer and by anionic polymerization of optically active monomers. Important differences in properties were observed between rac
Publikováno v:
Journal of Polymer Science: Polymer Chemistry Edition. 14:2853-2866
Autor:
Robert W. Lenz, Michel Reix, Robert E. Prud'homme, Ebrahim Bigdeli, Alain Leborgne, Nicolas Spassky
Publikováno v:
Macromolecules. 11:716-719
Publikováno v:
Tetrahedron Letters. 24:1027-1030
Enantiomeric purities and absolute configurations of chiral β-propiolactones can be easily determined from the NMR spectra of diastereomeric solvates resulting from the interaction between the lactone and optically active 2,2,2 trifluoro-1 (9-anthry
Autor:
Mihailo S. Jaćović, Nicolas Spassky, Alain Leborgne, Jasna Djonlagic, Marie‐Odile Sepulchre, Maurice Sepulchre
Publikováno v:
Die Makromolekulare Chemie. 189:1353-1362
Configurationally pure, high-molecular-weight poly(butylene maleate)s, poly(butylene fumarate)s, poly(octamethylene maleate)s, and poly(octamethylene fumarate)s were synthesized by reaction of the corresponding potassium dicarboxylates and dibromoalk
Publikováno v:
Pure and Applied Chemistry. 53:1735-1744
Two main stereochemical control steps must be considered in polymerizations of heterocyclic monomers using chiral initiators. The first one, coordination-stereoelection step, concerns the choice of a particular stereoisomeric species by the initiator
Publikováno v:
Macromolecules. 22:130-135
Preparation a partir de monomeres racemiques et optiquement actifs avec des amorceurs anioniques et de coordination
Publikováno v:
Journal of Polymer Science: Polymer Chemistry Edition. 19:1781-1793
S(−) and R(+) enantiomers of α-methyl-α-ethyl-β-propiolactone (MEEPL) were prepared in an eight-step synthesis with respective optical purities of 99 and 97% determined by 1H-NMR (250 MHz) spectroscopy. Polymers (PMEPL) of different enatiomeric