Authors Fischer, D. ; Pospiech, D. ; Scheler, U. ; Navarro, R. ; Messori, M. ; Fabbri, P.
Title Monitoring of the sol-gel synthesis of organic-inorganic hybrids by FTIR transmission, FTIR/ATR, NIR and ramam spectroscopy
Date 04.06.2008
Number 15505
Abstract The sol-gel synthesis of organic-inorganic hybrids based on triethoxysilane- terminated poly(ethylene oxide) and tetraethylorthosilicate was monitored in-situ using three spectroscopic methods (FTIR/ATR, Raman, NIR). These spectroscopic methods allow in-situ monitoring of the evolution of hybrid materials starting from the modification of the polymer and the early steps of hydrolysis up to the network formation. By application of 29Si solid-state NMR spectroscopy the assignment and quantification of the Raman bands to different end groups and different cross-linking states was made. The sol-gel reaction was also followed by in-line NIR spectroscopy. A multivariate data analysis was accomplished to obtain a conversion-time curve. Furthermore, we investigated spin-coated films on wafers using FTIR transmission spectroscopy.
Publisher Macromolecular Symposia
Wikidata 7
Citation Macromolecular Symposia 265 (2008) 134-143
Tags in-line spectroscopy in-situ monitoring organic-inorganic hybrids poly(ethylene oxide) sol-gel polycondensation hydrolysis spectra films polymers coatings silicon systems surface phase

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