%0 Journal Article
%T Insights into the Self-Directed Structuring of Hybrid Organic-Inorganic Silicas through Infrared Studies
%+ Laboratoire des colloïdes, verres et nanomatériaux (LCVN)
%+ Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM)
%+ Australian Nuclear Science and Technology Organisation (ANSTO)
%A Bantignies, Jean-Louis
%A Vellutini, Luc
%A Maurin, David
%A Hermet, Patrick
%A Dieudonné, Philippe
%A Wong Chi Man, Michel
%A R. Bartlett, John
%A Bied, Catherine
%A Sauvajol, Jean-Louis
%A J. E. Moreau, Joël
%< avec comité de lecture
%@ 1520-6106
%J Journal of Physical Chemistry B
%I American Chemical Society
%V 110
%N 32
%P 15797 -15802
%8 2006-06-19
%D 2006
%R 10.1021/jp060975r
%Z Chemical Sciences/Material chemistry
%Z Chemical Sciences/Organic chemistry
%Z Chemical Sciences/CatalysisJournal articles
%X Fourier transform infrared (FTIR) spectroscopy has been used to probe the organization of the organic fragments in lamellar bridged silsesquioxanes with organic substructures based on alkylene chains of various lengths and urea groups [O1.5Si(CH2)3NHCONH(CH2)nNHCONH(CH2)3SiO1.5] (n = 6, 8-12). The structure and intermolecular interactions (hydrophobic and H-bonding) of these well-defined self-structured hybrid silicas are discussed in relation to their powder X-ray diffraction patterns. The degree of structural order is determined by the length and parity of the alkylene spacer. A concomitant enhancement in the degree of condensation of the inorganic component and a decrease in the strength of the hydrophobic interactions between the organic components are demonstrated. The strength and directionality of the H-bonding are directly correlated to the crystalllinity of the organic-inorganic hybrid materials.
%G English
%L hal-00163295
%U https://hal.science/hal-00163295
%~ CNRS
%~ UNIV-MONTP1
%~ UNIV-MONTP2
%~ ENSC-MONTPELLIER
%~ ICG
%~ LCVN
%~ CHIMIE
%~ UNIV-MONTPELLIER
%~ UM1-UM2