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Dr. Lloyd Lumata, Prof. Dr. Matthew E. Merritt, Zohreh Hashami, Dr. S. James Ratnakar and Prof. Dr. Zoltan Kovacs Production and NMR Characterization of Hyperpolarized 107,109Ag Complexes Angewandte Chemie International Edition 51

Article first published online: 13 OCT 2011 | DOI: 10.1002/anie.201106073

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Both isotopes of silver, 107Ag and 109Ag, were simultaneously polarized by dynamic nuclear polarization (DNP), thus allowing large signal enhancements and the NMR characterization of Ag complexes in the millimolar concentration range. Since both isotopes have long relaxation times T1, the hyperpolarized NMR signal of one isotope could still be observed even after the magnetization of the other isotope had been destroyed by radio-frequency pulses.

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