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An artificial organosilicon receptor

Abbate, Vincenzo; Bassindale, Alan R.; Brandstadt, Kurt F. and Taylor, Peter G. (2012). An artificial organosilicon receptor. Polymer Chemistry, 3(8) pp. 2018–2027.

DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1039/c2py20135f
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Abstract

A biomimicking approach for the selective capture of dimethylcyclosiloxanes was developed. Inclusion complexes between cyclodextrins (CDs) and cyclosiloxanes were isolated and subsequently treated with toluene-2,4-diisocyanate (TDI) in DMSO to afford molecularly imprinted cyclodextrin (MICD) polymers. Following removal of the siloxane-based templates, the imprinted biomimetic polymers were characterized via scanning electron microscopy (SEM), cross-polarization magic angle spinning (CPMAS) NMR and elemental analysis. Substrate affinity and selectivity were evaluated via equilibrium batch-rebinding assays and quantitative gas-chromatographic analysis. The imprinting effect was assessed by comparing the binding of the synthetic receptors with blank (non-imprinted) polymers. Adsorption isotherms were measured and data fitted using several mathematical models and the dissociation constants (Kd) and the binding site densities (Bmax) were calculated. The study is believed to have delivered the first case of an artificial receptor for an organosilicon substrate, opening a new way for separation and purification in silicon chemistry.

Item Type: Journal Article
Copyright Holders: 2012 The Royal Society of Chemistry
ISSN: 1759-9962
Project Funding Details:
Funded Project NameProject IDFunding Body
Not SetNot SetDow Corning Corporation, Midland (MI), USA
Academic Unit/Department: Science > Life, Health and Chemical Sciences
Other Departments > Other Departments
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
eSTEeM
Biomedical Research Network (BRN)
Item ID: 34657
Depositing User: Peter Taylor
Date Deposited: 24 Oct 2012 12:03
Last Modified: 10 Mar 2014 09:27
URI: http://oro.open.ac.uk/id/eprint/34657
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