Structural Characterisation Of A Sol-Gel Copolymer Synthesised From Aliphatic And Aromatic Alkoxysilanes Using 29Si-NMR Spectroscopy

Authors

Mohamed Oubaha, Laboratoire des Mat´eriaux Inorganiques CNRS UMR 6002, Universit´e Blaise Pascal and Optical Sensors Laboratory/National Centre For Sensor Research, School of Physical Science, Dublin City UniversityFollow
M. Dubois, Laboratoire des Mat´eriaux Inorganiques CNRS UMR 6002, Universit´e Blaise Pascal
B. Murphy, Optical Sensors Laboratory/National Centre For Sensor Research, School of Physical Science, Dublin City University
P. Etienne, Laboratoire Des Verres, UMR 5587, Universit´e de Montpellier II

Document Type

Article

Rights

Available under a Creative Commons Attribution Non-Commercial Share Alike 4.0 International Licence

Disciplines

1.1 MATHEMATICS, 1.3 PHYSICAL SCIENCES

Publication Details

J Sol-Gel Sci Techn (2006) 38:111–119 doi:10.1007/s10971-006-7114-7

Abstract

A hybrid organic-inorganic material was prepared from the hydrolytic co-condensation of 3- trimethoxysilylpropylmethacrylate (MAPTMS) and diphenyldiethoxysilane (DPHDES). The synthesis was performed in three steps: (1) MAPTMS pre-hydrolysis, (2) addition of DPHDES, and (3) further hydrolysis of the obtained mixture. ²⁹ Si nuclear magnetic resonance spectroscopy was used to characterise the structural evolution of the mineral network during the synthesis. It revealed the catalytic effect of DPHDES on the condensation reaction of silanol groups, initially observed for pre-hydrolysed MAPTMS. In addition, it was clearly demonstrated that the formation of the highest condensed species of the aromatic oligomers (D₂ species) occurred only in the presence of aliphatic oligomers, which decrease the sterical hindrance about the silicon nuclei.

DOI

https://doi.org/10.1007/s10971-006-7114-7

Recommended Citation

Oubaha, M. et al (2006) Structural Characterisation Of A Sol-Gel Copolymer Synthesised From Aliphatic And Aromatic Alkoxysilanes Using 29Si-NMR Spectroscopy, J Sol-Gel Sci Techn (2006) 38:111–119 doi:10.1007/s10971-006-7114-7