Abbato, Vincenzo; Bassindale, Alan R.; Brandstadt, Kurt F. and Taylor, Peter G.
(2012).
| DOI (Digital Object Identifier) Link: | http://dx.doi.org/doi:10.1007/s10847-011-0103-7 |
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| Google Scholar: | Look up in Google Scholar |
Abstract
Molecular inclusion complexes between cyclodextrins and cyclic siloxanes were prepared and characterized via a combination of liquid and solid state NMR, FT-IR, TGA, powder X-ray diffraction, SEM–EDS and elemental analyses. The crystalline complexes adopted the channel-type conformation. Depending from the size of both the cyclic sugar cavity and the silicon guest, various yields (between 0 and 41%) and host–guest molar ratios (between 1:1 and 4:1) were obtained. α-cyclodextrin (α-CD) and β-cyclodextrin (β-CD) were observed to form crystalline inclusion complexes only with D3 (cyclic dimethyltrisiloxane) due to steric effects, whereas the larger γ-cyclodextrin (γ-CD) formed inclusion complexes both with D3, D4 (cyclic dimethyltetrasiloxane) and D5 (cyclic dimethylpentasiloxane). This study is believed to be the first step towards the selective removal of cyclic siloxanes impurities from commercial PDMS preparations.
| Item Type: | Journal Article |
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| Copyright Holders: | 2012 Springer Science+Business Media B.V. |
| ISSN: | 1573-1111 |
| Keywords: | cyclodextrin; cyclosiloxane; inclusion complex; channel-type |
| Academic Unit/Department: | Other Departments > Other Departments Science > Life, Health and Chemical Sciences |
| Item ID: | 32431 |
| Depositing User: | Peter Taylor |
| Date Deposited: | 08 Feb 2012 13:31 |
| Last Modified: | 22 Nov 2012 17:12 |
| URI: | http://oro.open.ac.uk/id/eprint/32431 |
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