Investigation on the vibrational and structural properties of a self-structured bridged silsesquioxane

The crystalline structure of ureidopyrimidinone-based silane (UPY) has been determined. The local and long range order structuring of the bridged silsesquioxane (MUPY) resulting from the sol-gel hydrolysis-condensation of the former precursor has been investigated by MFTIR (Mid Fourier Transform Inf...

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Published in:Physical chemistry chemical physics : PCCP 2012-04, Vol.14 (16), p.5672-5679
Main Authors: CREFF, Gaëlle, ARRACHART, Guilhem, MAN, Michel Wong Chi, BANTIGNIES, Jean-Louis, HERMET, Patrick, WADEPOHL, Hubert, ALMAIRAC, Robert, MAURIN, David, SAUVAJOL, Jean-Louis, CARCEL, Carole, MOREAU, Joel J. E, DIEUDONNE, Philippe
Format: Article
Language:English
Subjects:
Chemical Sciences
Chemistry
Colloidal gels. Colloidal sols
Colloidal state and disperse state
Crystallography, X-Ray
Exact sciences and technology
Gels - chemistry
General and physical chemistry
Hydrolysis
Material chemistry
Models, Molecular
Molecular Structure
Organosilicon Compounds - chemistry
Particle Size
Quantum Theory
Surface Properties
Vibration
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Summary:The crystalline structure of ureidopyrimidinone-based silane (UPY) has been determined. The local and long range order structuring of the bridged silsesquioxane (MUPY) resulting from the sol-gel hydrolysis-condensation of the former precursor has been investigated by MFTIR (Mid Fourier Transform InfraRed) combined with DFT (Density Functional Theory) and XRD (X-ray diffraction) studies. These studies showed that a long range structuring exists within the organic fragments with the transcription of the DDAA (Donor-Donor-Acceptor-Acceptor) H-bonding array from UPY to MUPY whereas a disordered siloxane network was revealed in the hybrid material.
ISSN:1463-9076
1463-9084
DOI:10.1039/c2cp40250e