Abstract
AbstractThe peculiarities of measurements of chemically induced dynamic nuclear polarization (CIDNP) with pulsed and Fourier transform NMR spectrometers are discussed. If detection is accomplished in this way, new classes of experiments become possible. First, CIDNP net and multiplet effects can be separated by pulse techniques. Second, kinetic measurements (“flash” CIDNP) can be performed with a time resolution in the submicrosecond range. Third, pseudostationary experiments allow recording of time‐independent CIDNP spectra that are free from the effects of nuclear spin relaxation in the products and that possess improved signal‐to‐noise ratios while maintaining excellent suppression of unchanging background magnetization. Finally, signals of unpolarized nuclei in the products can be made observable by means of coherence transfer techniques.
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