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Reference type: Journal
Authors: Liang Y, Gu L, Liu XQ, Yang QY, Kajiura HS, Li YM, Zhou TS, Shi GY
Article Title: Composites of Polyaniline Nanofibers and Molecularly Imprinted Polymers for Recognition of Nitroaromatic Compounds.
Publication date: 2011
Journal: Chemistry - A European Journal
Volume: 17
Issue: (21)
Page numbers: 5989-5997.
DOI: 10.1002/chem.201002709
Alternative URL: http://onlinelibrary.wiley.com/doi/10.1002/chem.201002709/

Abstract: Abstract: This paper reports a monomer strategy for imprinting of 1,3-dinitrobenzene (DNB) molecules at the surface of conductive functional polyaniline nanofibers (PANI) for the first time. It has been demonstrated that the vinyl functional monomer layer on the PANI surface can not only direct the selective occurrence of imprinting polymerization, but can also drive DNB templates into the polymer through charge-transfer complexing interactions between DNB and functionalized PANI. These two basic processes lead to the formation of DNB-imprinted polymers at the surface of polyaniline nanofibers. The capacity to uptake DNB shows that selectivity coefficient in the nanofibers polymers is nearly three times as high as that of traditional imprinted materials and the nanofibers polymers also possess high selectivity toward DNB in comparison to similar nitroaromatic compounds. A linear response of DNB concentration between 2.20 x 10-8 and 3.08 x 10-6 M was exhibited with a detection limit of 7.33 x 10-9 M (S/N=3). These results reported here could form the basis of a new strategy for preparing various polymer-coating layers on polyaniline supports and the molecular imprinting techniques discussed could also find applications in the fields of separation, trace detection, and environmental monitoring
Template and target information: 1,3-dinitrobenzene, DNB
Author keywords: electrochemistry, imprinting, nitroaromatic compounds, polymers

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