Výsledky vyhledávání - "Julien Graffion"

An All-in-One Molecule for the One-Step Synthesis of Functional Hybrid Silica Particles with Tunable Sizes

Autor: Julien Graffion, Dounia Dems, Thibaud Coradin, Mesut Demirelli, Nicolas Delsuc, Carole Aimé

Publikováno v: European Journal of Inorganic Chemistry
European Journal of Inorganic Chemistry, Wiley-VCH Verlag, 2017, 2017 (43), pp.5047-5051. ⟨10.1002/ejic.201701181⟩

International audience; Spherical particles with well-defined diameters were obtained by self-assembly of trityl-based molecules. Thanks to the robustness of the organic scaffold, a variety of modifications could be covalently introduced into the net

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b10616e18cdd574319e550f2cdc2c49
https://hal.sorbonne-universite.fr/hal-02121324/document

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Synthesis and reactivity of pyrrolo[3,2-d][1,3]oxazine-2,4-dione. Access to new pyrrolo[3,2-e][1,4]diazepine-2,5-diones

Autor: Jean Martinez, Vincent Lisowski, Kim Spielmann, Ludovic T. Maillard, Jean-Daniel Malcor, Yann Brouillette, Nicolas Masurier, Julien Graffion

Publikováno v: Tetrahedron. 70:4631-4639

A convenient synthesis of pyrrolo[3,2- d ][1,3]oxazine-2,4-dione 4 is described and its reactivity towards various nucleophiles studied. The regioselective ring opening of anhydride 4 or its N -alkylated analog 25 in the presence of alanine or prolin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b3a7cc530e806fbcf9a046882c87bdb5
https://doi.org/10.1016/j.tet.2014.05.046

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ChemInform Abstract: Synthesis and Reactivity of Pyrrolo[3,2-d][1,3]oxazine-2,4-dione. Access to New Pyrrolo[3,2-e][1,4]diazepine-2,5-diones

Autor: Jean Martinez, Julien Graffion, Nicolas Masurier, Ludovic T. Maillard, Vincent Lisowski, Yann Brouillette, Kim Spielmann, Jean-Daniel Malcor

Publikováno v: ChemInform. 45

Ester (I), readily available from isoxazole in 3 steps, is transformed to the desired ring system (III) whose reactivity toward amines, thiols, alcohols, and amino acids is investigated.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::255fe475d1aba7370ac789410bba0ad5
https://doi.org/10.1002/chin.201450171

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Luminescent coatings from bipyridine-based bridged silsesquioxanes containing Eu3+ and Tb3+ salts

Autor: John R. Bartlett, Luís D. Carlos, V. R. Fernandes, Rute A. S. Ferreira, Michel Wong Chi Man, Ana M. Cojocariu, Paulo André, Xavier Cattoën, Julien Graffion

Publikováno v: Journal of Materials Chemistry
Journal of Materials Chemistry, Royal Society of Chemistry, 2012, 22, pp.13279-13285. ⟨10.1039/c2jm31289a⟩

International audience; The sol-gel fabrication of bridged silsesquioxane thin films containing trivalent lanthanide ions (Ln3+) has been achieved from a 4,40-diureido-2,20-bipyridine bridged organosilane (P4) in the presence of Eu3+ or Tb3+ salts. C

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::23d16f0af07cc554c15306771f4126d7
https://hal.archives-ouvertes.fr/hal-00707715

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Engineering of metal-free bipyridine-based bridged silsesquioxanes for sustainable solid-state lighting

Autor: Vânia T. Freitas, Luís D. Carlos, Julien Graffion, Rute A. S. Ferreira, Michel Wong Chi Man, Xavier Cattoën

Publikováno v: Journal of Materials Chemistry
Journal of Materials Chemistry, Royal Society of Chemistry, 2012, 22, pp.6711-6715. ⟨10.1039/c2jm15225h⟩

International audience; We demonstrate an improvement of the emission quantum yield and the luminance figures of merit of metal-free bridged silsesquioxanes--by a factor of 2, 0.43 ± 0.04, and by two orders of magnitude, (1.4 ± 0.1) x 104 cd m-2, r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6128c14c6ce7aaba1654974442020d02
https://hal.archives-ouvertes.fr/hal-00680807

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Modulating the photoluminescence of bridged silsesquioxanes incorporating Eu(3+)-complexed n,n '-diureido-2,2 '-bipyridine isomers: application for luminescent solar concentrators

Autor: Paulo André, Luís D. Carlos, Michel Wong Chi Man, Xavier Cattoën, Rute A. S. Ferreira, V. R. Fernandes, Julien Graffion

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Chemistry of Materials
Chemistry of Materials, American Chemical Society, 2011, 23, pp.4773-4782. ⟨10.1021/cm2019026⟩
Chemistry of Materials, 2011, 23, pp.4773-4782. ⟨10.1021/cm2019026⟩

Two new urea-bipyridine derived bridged organosilanes (P5 and P6) have been synthesized and their hydrolysis-condensation under nucleophilic catalysis in the presence of Eu(3+) salts led to luminescent bridged silsesquioxanes (M5-Eu and M6-Eu). An im

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4eb876c19fe81af1d48f9b88fc993211
http://hdl.handle.net/10773/5913

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