| Download | - View accepted manuscript: Molecularly imprinted mesoporous organosilica (PDF, 1.4 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1021/nn1035697 |
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| Author | Search for: Lofgreen, Jennifer E.; Search for: Moudrakovski, Igor L.1; Search for: Ozin, Geoffrey A. |
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| Affiliation | - National Research Council of Canada. NRC Steacie Institute for Molecular Sciences
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| Format | Text, Article |
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| Subject | molecular imprint; periodic mesoporous organosilica; solid-phase extraction; bisphenol A; hybrid material |
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| Abstract | We have prepared molecularly imprinted mesoporous organosilica (MIMO) using a semicovalent imprinting technique. A thermally reversible covalent bond was used to link a bisphenol A (BPA) imprint molecule to a functional alkoxysilane monomer at two points to generate a covalently bound imprint precursor. This precursor was incorporated into a cross-linked periodic mesoporous silica matrix via a typical acid-catalyzed, triblock copolymer-templated, sol−gel synthesis. Evidence of imprint sites buried in the pore walls was found through careful characterization of the imprinted material and its comparison to similarly prepared non-imprinted mesoporous organosilica (NIMO) and pure periodic mesoporous silica (PMS). After thermal treatment, the imprinted material (MIMO-ir) removed more than 90% of appropriately sized bisphenol species from water, yet showed significantly lower binding for both smaller and larger molecules containing phenol moieties. Identically treated NIMO-ir showed much poorer retention behavior than MIMO-ir for the same bisphenol species and behaved only slightly better than PMS-ir. |
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| Publication date | 2011-02-16 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 19734719 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 334dcc8a-6624-4027-88e0-d680965b3958 |
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| Record created | 2012-04-02 |
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| Record modified | 2020-04-21 |
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