Nahar-Borchert, Saifun ; Kroke, Edwin ; Riedel, Ralf ; Boury, Bruno ; Corriu, Robert J. P. (2003)
Synthesis and characterization of alkylene-bridged silsesquicarbodiimide hybrid xerogels.
In: Journal of Organometallic Chemistry, 686 (1-2)
doi: 10.1016/S0022-328X(03)00440-6
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Hybrid polymers consisting of flexible organic chains within an inorganic silsesquicarbodiimide network of the type [(NCN)1.5Si-(CH2)x-Si(NCN)1.5]n (where x=2, 6, and 8) were prepared by mild sol–gel polycondensation reactions of bis(trichlorosilyl)alkanes and bis(trimethylsilyl)carbodiimide. The presence of the NCN groups in xerogel structures was identified by FTIR spectra. The composition and molecular structures were characterized by elemental analysis, solid-state 13C CP MAS- and 29Si CP MAS-NMR spectroscopies, and XRD. Scanning as well as transmission electron microscopies were used to examine the morphology of the xerogels. In addition, the pore structure of the materials was examined by the gas adsorption (BET) method and it is found that the surface area decreased with increasing length of the alkylene spacing group. Hybrid polymers consisting of flexible organic chains within an inorganic silsesquicarbodiimide network of the type [(NCN)1.5Si-(CH2)x-Si(NCN)1.5]n (where x=2, 6, and 8) were prepared by mild sol–gel polycondensation reactions of bis(trichlorosilyl)alkanes and bis(trimethylsilyl)carbodiimide. The presence of the NCN groups in xerogel structures was identified by FTIR spectra.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2003 |
| Autor(en): | Nahar-Borchert, Saifun ; Kroke, Edwin ; Riedel, Ralf ; Boury, Bruno ; Corriu, Robert J. P. |
| Art des Eintrags: | Bibliographie |
| Titel: | Synthesis and characterization of alkylene-bridged silsesquicarbodiimide hybrid xerogels |
| Sprache: | Englisch |
| Publikationsjahr: | 21 November 2003 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Organometallic Chemistry |
| Jahrgang/Volume einer Zeitschrift: | 686 |
| (Heft-)Nummer: | 1-2 |
| DOI: | 10.1016/S0022-328X(03)00440-6 |
| Kurzbeschreibung (Abstract): | Hybrid polymers consisting of flexible organic chains within an inorganic silsesquicarbodiimide network of the type [(NCN)1.5Si-(CH2)x-Si(NCN)1.5]n (where x=2, 6, and 8) were prepared by mild sol–gel polycondensation reactions of bis(trichlorosilyl)alkanes and bis(trimethylsilyl)carbodiimide. The presence of the NCN groups in xerogel structures was identified by FTIR spectra. The composition and molecular structures were characterized by elemental analysis, solid-state 13C CP MAS- and 29Si CP MAS-NMR spectroscopies, and XRD. Scanning as well as transmission electron microscopies were used to examine the morphology of the xerogels. In addition, the pore structure of the materials was examined by the gas adsorption (BET) method and it is found that the surface area decreased with increasing length of the alkylene spacing group. Hybrid polymers consisting of flexible organic chains within an inorganic silsesquicarbodiimide network of the type [(NCN)1.5Si-(CH2)x-Si(NCN)1.5]n (where x=2, 6, and 8) were prepared by mild sol–gel polycondensation reactions of bis(trichlorosilyl)alkanes and bis(trimethylsilyl)carbodiimide. The presence of the NCN groups in xerogel structures was identified by FTIR spectra. |
| Freie Schlagworte: | Hybrid xerogels, Silylcarbodiimides, Synthesis, Porosity |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 23 Apr 2012 11:21 |
| Letzte Änderung: | 05 Mär 2013 10:00 |
| PPN: | |
| Sponsoren: | The authors gratefully acknowledge Fonds der Chemischen Industrie, Frankfurt (Germany) and the Deutsche Forschungsgemeinschaft (DFG), Bonn (Germany), for financial support of the present work by funding the project Kr1739/5-1. |
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