Quantification Studies in Continuous-Flow 13C Nuclear Magnetic Resonance Spectroscopy by Use of Immobilized Paramagnetic Relaxation Agents

• DOI: 10.1021/jp021631d
• Publication Date: 2003-05-15T14:18:48Z
• Authors: Holger H. Fischer; Michael Seiler; Thomas S. Ertl; Ulrich Eberhardinger; Helmut Bertagnolli; Heribert Schmitt-...; Klaus Albert
• Keywords: 01 natural sciences; 0104 chemical sciences

Different types of immobilized free radicals as well paramagnetic gadolinium(III) complexes were synthesized and used relaxation agents to shorten the spin−lattice times T1 analytes in quantitative continuous-flow 13C nuclear magnetic resonance spectroscopy (NMR). The characterized with electron (EPR) extended X-ray absorption fine structure (EXAFS). With these agents, it was possible obtain a 4-fold increase signal-to-noise ratio per unit time, an almost NMR spectra could be acquired this method.