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Open Chemistry

formerly Central European Journal of Chemistry

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IMPACT FACTOR 2016 (Central European Journal of Chemistry): 1.460

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2391-5420
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Volume 13, Issue 1

Issues

Dummy molecularly imprinted mesoporous silicates for selective adsorption of 2-naphthol

Guitao Luoa
  • Corresponding author
  • Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Yunping Li / An Wang / Qiang Lin / Guolin Zhang / Chun Wang
Published Online: 2015-02-05 | DOI: https://doi.org/10.1515/chem-2015-0090

Abstract

Dummy molecularly imprinted mesoporous silicates (MIMS-2) were made by co-condensation of tetraethyl orthosilicate (TEOS) with precursors of bi-functional mimic of 2-naphthol, 2,7-dihydroxynaphthalene, around triblock copolymer surfactant Pluronic (P123) micelles. The bi-functional template was linked to two functional monomers through thermally cleavable covalent bonds to generate imprint precursor. This provides the possibility of incorporating the target into the cross-linked mesoporous silicate matrix in the non-ionic surfactant templated sol-gel process. P123 was eluted by ethanol extraction and template molecules were removed by refluxing the materials in a mixture of dimethyl sulfoxide (DMSO) and water. MIMS-1 was prepared similarly except that 2-naphthol was used as template instead of 2,7-dihydroxynaphthalene. Solid phase extraction studies showed that MIMS-2 exhibited good retention and selectivity for 2-naphthol among its structural analogues. The mono-functional molecule 2-naphthol was unable to be incorporated into the silica matrix of mesoporous material by the identical method, and the resulting material MIMS-1 exhibits poor selectivity to the template analogues.

Graphical Abstract

Keywords : sol-gel preparation; porous materials; molecular imprinting; organosilicates; 2-naphthol

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About the article

Received: 2014-05-03

Accepted: 2014-11-07

Published Online: 2015-02-05


Citation Information: Open Chemistry, Volume 13, Issue 1, ISSN (Online) 2391-5420, DOI: https://doi.org/10.1515/chem-2015-0090.

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© 2015 Guitao Luoa et al.. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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