Single-Transition Coherence Transfer by Adiabatic Cross Polarization in NMR

• Published in: Chemphyschem Vol. 1; no. 4; pp. 217 - 221
• Main Authors: Eykyn, Thomas R., Ferrage, Fabien, Winterfors, Emanuel, Bodenhausen, Geoffrey
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag GmbH 15.12.2000; WILEY‐VCH Verlag GmbH; Wiley
• Subjects: Atomic and molecular physics; Biological and medical sciences; coherence transfer; cross polarization; Exact sciences and technology; Fundamental and applied biological sciences. Psychology; General aspects, investigation technics, apparatus; Molecular properties and interactions with photons; NMR spectroscopy; Nuclear resonance and relaxation; peptides; Physics; Tissues, organs and organisms biophysics; Theoretical study; Coherence transfer; Peptides; Experimental study; NMR spectroscopy; Cross polarization
• ISSN: 1439-4235; 1439-7641
• DOI: 10.1002/1439-7641(20001215)1:4<217::AID-CPHC217>3.0.CO;2-V

Spin‐state selective coherence transfer between single‐transition coherences in a scalar‐coupled two‐spin system may be achieved by employing highly selective, constant amplitude radio frequency fields. We extend this method by employing amplitude‐modulated pulses to achieve an adiabatic transfer, as shown in the picture (I=intensity). Different limiting cases are considered. The imperfect reversibility of the transfer reveals deviations from adiabaticity.