title: Investigation on the vibrational and structural properties of a self-structured bridged silsesquioxane.
abstract: 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.
authors.affiliation: Laboratoire Charles Coulomb (UMR CNRS 5521), Université Montpellier 2, 34095 Montpellier Cedex 5, France.
authors.forename: Gaëlle
authors.initials: G
authors.lastname: Creff
authors.forename: Guilhem
authors.initials: G
authors.lastname: Arrachart
authors.forename: Patrick
authors.initials: P
authors.lastname: Hermet
authors.forename: Hubert
authors.initials: H
authors.lastname: Wadepohl
authors.forename: Robert
authors.initials: R
authors.lastname: Almairac
authors.forename: David
authors.initials: D
authors.lastname: Maurin
authors.forename: Jean-Louis
authors.initials: JL
authors.lastname: Sauvajol
authors.forename: Carole
authors.initials: C
authors.lastname: Carcel
authors.forename: Joël J E
authors.initials: JJ
authors.lastname: Moreau
authors.forename: Philippe
authors.initials: P
authors.lastname: Dieudonné
authors.forename: Michel Wong Chi
authors.initials: MW
authors.lastname: Man
authors.forename: Jean-Louis
authors.initials: JL
authors.lastname: Bantignies
mesh_terms: D018360:Crystallography, X-Ray; D005782:Gels / Q000737:chemistry; D006868:Hydrolysis; D008958:Models, Molecular; D015394:Molecular Structure; D017646:Organosilicon Compounds / Q000737:chemistry*; D010316:Particle Size; D011789:Quantum Theory; D013499:Surface Properties; D014732:Vibration
chemical_list: D005782:Gels; D017646:Organosilicon Compounds