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The use of LCMS as an analytical tool for hydrolysis/polycondensation monitoring of a chiral ORMOSIL precursor

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Abstract

The kinetic of the sol–gel hydrolysis and polycondensation reactions of a chiral ORMOSIL precursor was investigated by LCMS technique as a function of water excess and pH. While the amount of water does not significantly change the kinetics, the reactions strongly depend on the [H]+ concentration. At pH ≤ 3, the hydrolysis is very fast and the conversion of the precursor is completed within less than 1 h whereas at 80% of the precursor is still present after 50 h at pH = 3.5. This kinetic study allows to define a set of initial conditions and time ranges required to provide good optical quality dip coated films .

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Notes

  1. The concentration of the mono-hydrolyzed monomer for 10 equivalents of H2O does not vary enough to be significantly considered.

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Acknowledgment

This work was supported by the Agence Nationnale de la Recherche grant number ANR-08-BLAN-0149-01.

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Authors and Affiliations

  1. Laboratoire de Chimie UMR 5182 CNRS/ENS, Ecole Normale Supérieure de Lyon 46, Allée d’Italie, 69364, Lyon Cedex 07, France

    L. Guy

  2. Laboratoire de Physico-Chimie des Matériaux Luminescents UMR 5620, CNRS/UCBL Domaine Scientifique de la Doua, Université Claude Bernard Lyon 1, Batiment Alfred Kastler, 10 rue André-Marie Ampère, 69622, Villeurbanne Cedex, France

    T. Vautey, C. Le Luyer & S. Guy

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  1. L. Guy
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  2. T. Vautey
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  3. C. Le Luyer
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  4. S. Guy
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Correspondence to L. Guy.

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Guy, L., Vautey, T., Le Luyer, C. et al. The use of LCMS as an analytical tool for hydrolysis/polycondensation monitoring of a chiral ORMOSIL precursor. J Sol-Gel Sci Technol 52, 146–152 (2009). https://doi.org/10.1007/s10971-009-2004-4

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  • DOI: https://doi.org/10.1007/s10971-009-2004-4

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