Dynamic Nuclear Polarization with Photoexcited Triplet Electrons in a Glassy Matrix

被引：29
|
作者：
Tateishi, Kenichiro [1 ,2 ]
Negoro, Makoto [1 ]
Kagawa, Akinori [1 ]
Kitagawa, Masahiro [1 ]
机构：
[1] Osaka Univ, Div Adv Elect & Opt Sci, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan
[2] RIKEN, Nishina Ctr Accelerator Based Sci, Wako, Saitama 3510198, Japan
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2013年 / 52卷 / 50期
关键词：
dynamic nuclear polarization; glasses; NMR spectroscopy; photoexcited states; triplet states; SOLID-STATE NMR; SPECTROSCOPY; SPINS; BACTERIORHODOPSIN; TEMPERATURE; SENSITIVITY; AGENT; WATER;
D O I：
10.1002/anie.201305674
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Utilizing photoexcited triplet electrons, dynamic nuclear polarization (DNP) has achieved, in a glassy matrix at 0.40T and 120K, a 1H spin polarization of 1.45 %, which is 4250 times larger than the thermal 1H 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. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：13307 / 13310
页数：4
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