Solid-State NMR studies of propylphosphonic functionalized SBA-15 mesoporous silica: Characterization of Hydrogen-Bonding interactions - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue European Journal of Inorganic Chemistry Année : 2013

Solid-State NMR studies of propylphosphonic functionalized SBA-15 mesoporous silica: Characterization of Hydrogen-Bonding interactions

Résumé

This work aims to investigate the local structure of mesoporous silica of the type SBA-15 functionalized with propylphosphonic acid groups by means of an extensive solid-state NMR spectroscopic study. Here, the functionalized SBA-15 samples are obtained by a one-step synthetic method that allowed us better control over the loading and the distribution of the surface functions. In addition to NMR spectroscopy, the materials are characterized by X-ray diffraction, nitrogen adsorption-desorption and transmission electron microscopy. The 29Si, 13C, 31P and 1H one-dimensional NMR spectroscopic results are discussed according to the nature of the functional groups in dry and wet materials. This paper proposes a rigorous approach that shows possible hydrogen bonding between adjacent phosphonic acid groups in dry SBA-15, from the comparative study with an alkylphosphonic acid material. This outcome was demonstrated by two-dimensional NMR spectroscopic solid-state experiments, including the use of 1H-1H spin-diffusion exchange experiments, 31P-31P double quanta and an original pulse sequence that corresponds to 31P-1H-1H-31P correlation experiments.

Dates et versions

hal-00804371 , version 1 (25-03-2013)

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Citer

Nicolas Bibent, Thibault Charpentier, Sabine Devautour-Vinot, Ahmad Mehdi, Philippe Gaveau, et al.. Solid-State NMR studies of propylphosphonic functionalized SBA-15 mesoporous silica: Characterization of Hydrogen-Bonding interactions. European Journal of Inorganic Chemistry, 2013, pp.2350. ⟨10.1002/ejic.201201404⟩. ⟨hal-00804371⟩
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