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
Article, Bibliographie
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.
| Item Type: | Article |
|---|---|
| Erschienen: | 2003 |
| Creators: | Nahar-Borchert, Saifun ; Kroke, Edwin ; Riedel, Ralf ; Boury, Bruno ; Corriu, Robert J. P. |
| Type of entry: | Bibliographie |
| Title: | Synthesis and characterization of alkylene-bridged silsesquicarbodiimide hybrid xerogels |
| Language: | English |
| Date: | 21 November 2003 |
| Publisher: | Elsevier |
| Journal or Publication Title: | Journal of Organometallic Chemistry |
| Volume of the journal: | 686 |
| Issue Number: | 1-2 |
| DOI: | 10.1016/S0022-328X(03)00440-6 |
| 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. |
| Uncontrolled Keywords: | Hybrid xerogels, Silylcarbodiimides, Synthesis, Porosity |
| Divisions: | 11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences |
| Date Deposited: | 23 Apr 2012 11:21 |
| Last Modified: | 05 Mar 2013 10:00 |
| PPN: | |
| Funders: | 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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