Premium
Production and NMR Characterization of Hyperpolarized 107,109 Ag Complexes
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 - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201106073
Subject(s) - isotope , characterization (materials science) , hyperpolarization (physics) , polarization (electrochemistry) , nuclear magnetic resonance spectroscopy , relaxation (psychology) , nuclear magnetic resonance , chemistry , analytical chemistry (journal) , materials science , physics , nuclear physics , nanotechnology , psychology , social psychology , chromatography
Both isotopes of silver , 107 Ag and 109 Ag, 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 T 1 , 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.