Application of Immobilized Free Radicals in Supercritical Fluid Chromatography 
Hyphenated with Proton Nuclear Magnetic Resonance Spectroscopy

Fischer, HH; Tseng, L-H; Raitza, M; Albert, K

doi:10.1002/1097-458X(200005)38:5<336::AID-MRC652>3.0.CO;2-5

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Application of Immobilized Free Radicals in Supercritical Fluid Chromatography Hyphenated with Proton Nuclear Magnetic Resonance Spectroscopy

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https://onlinelibrary.wiley.com/doi/epdf/10.1002/1097-458X%28200005%2938%3A5%3C336%3A%3AAID-MRC652%3E3.0.CO%3B2-5
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Fischer, H., Tseng, L.-H., Raitza, M., & Albert, K. (2000). Application of Immobilized Free Radicals in Supercritical Fluid Chromatography Hyphenated with Proton Nuclear Magnetic Resonance Spectroscopy. Magnetic Resonance in Chemistry, 38(5), 336-342. doi:10.1002/1097-458X(200005)38:5<336:AID-MRC652>3.0.CO;2-5.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-E58B-5

Abstract

Immobilized free radicals were synthesized and used to shorten the spin-lattice relaxation times of analytes in the hyphenation of supercritical fluid chromatography (SFC) with proton high-field nuclear magnetic resonance spectroscopy (NMR). The effect of the immobilized free radicals was studied for the first time under on-line SFC-NMR coupling conditions. With this method it was possible to obtain integratable NMR spectra in on-line continuous-flow SFC-1H NMR spectroscopy.