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Dynamic Nuclear Polarization with Photoexcited Triplet Electrons in a Glassy Matrix
Author(s) -
Tateishi Kenichiro,
Negoro Makoto,
Kagawa Akinori,
Kitagawa Masahiro
Publication year - 2013
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.201305674
Subject(s) - polarization (electrochemistry) , electron , dopant , doping , materials science , molecule , thermal , chemistry , physics , optoelectronics , organic chemistry , nuclear physics , meteorology
Utilizing photoexcited triplet electrons , dynamic nuclear polarization (DNP) has achieved, in a glassy matrix at 0.40 T and 120 K, a 1 H spin polarization of 1.45 %, which is 4250 times larger than the thermal 1 H spin polarization. In a glassy matrix, various molecules of interest, including 2,3,4‐trifluorobenzoic acid and 5‐fluorouracil can be co‐doped with polarizing agents; polarizing these co‐dopants with DNP was also successful.