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Nanostructuring of Hybrid Silicas through a Self-Recognition Process 
Auteur(s): Arrachart Guilhem, Creff Gaëlle, Wadepohl Hubert, Blanc C., Bonhomme Christian, Babonneau Florence, Alonso Bruno, Bantignies J.-L., Carcel Carole, Moreau Joël J. E., Dieudonne-George P., Sauvajol J.-L., Massiot Dominique, Wong Chi Man Michel
(Article) Publié:
Chemistry - A European Journal, vol. 15 p.5002 (2009)
Ref HAL: hal-01224956_v1
PMID 19350601
DOI: 10.1002/chem.200802748
WoS: 000266292200007
Exporter : BibTex | endNote
13 Citations
Résumé: The hydrolysis and condensation of a silylated derivative of ureidopyrimidinone led to nanostructured hybrid silica, such as that depicted, as clearly shown by powder XRD studies. The nanostructuring was directly related to molecular recognition through hydrogen bonding. By combining FTIR, solution and solid-state NMR spectroscopic data, the transcription of the hydrogen-bonding networks from the precursor to the final product was clearly evidenced.
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Toward Organization of Cyano-Bridged Coordination Polymer Nanoparticles within an Ionic Liquid Crystal
Auteur(s): Larionova Joulia, Guari Yannick, Blanc C., Dieudonne-George P., Tokarev Alexei, Guérin Christian
(Article) Publié:
Langmuir, vol. 25 p.1138 (2009)
Ref HAL: hal-01224941_v1
DOI: 10.1021/la803001x
WoS: 000262431100069
Exporter : BibTex | endNote
44 Citations
Résumé: Size controlled cyano-bridged coordination polymer nanoparticles Mn1.5[Cr(CN)6] have been synthesized and organized at the nanolevel by using the room temperature ionic liquid crystal (ILC) C12-MIMBF4. The as-obtained material was studied by transmission electron microscopy (TEM), differential scanning calorimetry (DSC), optical microscopy, and X-ray diffraction. These analyses reveal the presence of a long-range organization of cyano-bridged nanoparticles at the nanoscale level within the ILC phase. The magnetic study of these nanoparticles reveals an appearance of a nanocluster-glass-like regime caused by magnetostatic interactions between neighboring nanoparticles. The properties of these organized nanoparticles have been compared with the properties of nanoparticles of the same composition and stoichiometry obtained and randomly dispersed into the isotropic IL C10-MIMBF4.
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