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Inside Cover: Production and NMR Characterization of Hyperpolarized 107,109 Ag Complexes (Angew. Chem. Int. Ed. 2/2012)
Author(s) -
Lumata Lloyd,
Merritt Matthew E.,
Hashami Zohreh,
Ratnakar S. James,
Kovacs Zoltan
Publication year - 2012
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201107488
Subject(s) - relaxation (psychology) , excitation , magnetization , chemistry , hyperpolarization (physics) , characterization (materials science) , nuclear magnetic resonance spectroscopy , polarization (electrochemistry) , nuclear magnetic resonance , analytical chemistry (journal) , cover (algebra) , materials science , physics , nanotechnology , magnetic field , psychology , social psychology , quantum mechanics , chromatography , mechanical engineering , engineering
107 Ag and 109 Ag undergo simultaneous dynamic nuclear polarization as described by Z. Kovacs et al. in their Communication on page 525 ff. The large liquid‐state NMR enhancements achieved allow the Ag NMR spectroscopic characterization of Ag + complexes in the m M concentration range. Both hyperpolarized isotopes have long T 1 relaxation times, enabling NMR experiments to be performed in which the signal from the 107 Ag nuclei can be detected after destroying the 109 Ag magnetization by radio‐frequency excitation.