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Jima Chandran Laetitia Shintu Stefano Caldarelli 《Magnetic resonance in chemistry : MRC》2014,52(11):694-698
The detailed characterization of complex mixtures by NMR is often hampered by the presence of signals from uninformative compounds, the resonances of which overlap with those of the molecules of interest. We provide here a proof of principle for an approach to NMR signal suppression in complex samples using Molecularly Imprinted Polymers (MIPS). Addition of a few milligrams of polymer to a solution traps the target molecule in typical micromolar to millimolar concentration, thus achieving in situ signal suppression, without altering any other spectral features. This method minimized any manipulation or perturbation of the spectrum and was applied to a complex mixture of known compounds and to a plant extract, in both cases spiked with a compound (bisphenol A), which was subsequently removed by selective binding to a complementary MIP. What is described in this report is comparable with microextraction and may in due course be applied to a large number of analytical challenges. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
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Lachore Wegene Lema Andoshe Dinsefa Mensur Mekonnen Mulualem Abebe Hone Fekadu Gashaw 《Journal of Solid State Electrochemistry》2022,26(2):295-311
Journal of Solid State Electrochemistry - Today, organic–inorganic perovskite hybrid solar cells are especially attracted by the energy industries to design and develop new-generation... 相似文献
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Concurrent genesis of color and electrical conductivity in leathers through in‐situ polymerization of aniline for smart product applications 下载免费PDF全文
Wegene Jima Demisie Thanikaivelan Palanisamy Krishnaraj Kaliappa Phebe Kavati Chandrasekaran Bangaru 《先进技术聚合物》2015,26(5):521-527
We present a simple method to produce self‐colored and conducting leathers using in‐situ polymerization of aniline with ammonium persulfate as oxidant and hydrochloric acid as dopant. The structural and morphological features of treated leathers were examined using Fourier transformed infra‐red spectroscopy, X‐ray diffraction and scanning electron microscopic analyses. Results suggest the deposition of conducting emeraldine salt form of polyaniline on the leather substrate rather than other poorly conducting states. We also show that the treated leathers are bluish green through reflectance measurements thereby suggesting that the use of toxic and expensive dyes can be avoided for coloration process. Further, we demonstrate that a maximum electrical conductivity of 0.15 S/cm is obtained for the leather treated with optimal experimental conditions, which aids its application to operate touch‐screen devices. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献
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Jima Wegene Demisie Dada Tewodros Kassa Palanisamy Thanikaivelan 《Journal of Thermal Analysis and Calorimetry》2019,135(6):3289-3295
Journal of Thermal Analysis and Calorimetry - Traditionally garment leathers are used in cold environment to protect the humans from chill weather. This is because leather garments have low heat... 相似文献
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