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- E-ISSN 2288-8985
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Preparation and characterization of immobilized 8-hydroxyquinoline for chromatographic application
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2000, v.13 no.1, pp.49-54
Kim,
B.
(2000). Preparation and characterization of immobilized 8-hydroxyquinoline for chromatographic application. Analytical Science and Technology, 13(1), 49-54.
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Abstract
The 8-hydroxyquinoline derivative of silica gel has been prepared through the 5 step reaction. We carried out infrared as well as nuclear magnetic resonance spectrometric characterization of products taken from each step of reaction. IR study of bare silica gel showed free and hydrogen bonded hydroxyl. From the 1st step reaction, we observed IR bands for N-H and C-H as well as NMR peaks for three methylene carbons in APTS group. From the 2nd step, we observed IR bands for carbonyl, nitro and aromatic carbon group with NMR peaks for aliphatic, aromatic and carbonyl carbons. The reduction of <TEX>$NO_2$</TEX> group to <TEX>$NH_2$</TEX> group is confirmed by IR and NMR from 3rd step reaction. In the last step, the immobilization of 8-quinolinol is confirmed by disappearance of <TEX>$N{\equiv}N$</TEX> IR peak observed in 4th step.
- keywords
- 8-hydroxyquinoline, HPLC, DRiFfS, C-13 CPIMAS NMR
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