Paramagnet Enhanced Nuclear Spin Relaxation in H2O@Open-C60 and H2@Open-C60

被引：1
|
作者：
Li, Yongjun [1 ]
Lei, Xuegong [1 ]
Chen, Judy Y. C. [1 ]
Murata, Yasujiro [3 ]
Turro, Nicholas J. [1 ]
Lawler, Ronald G. [2 ]
机构：
[1] Columbia Univ, Dept Chem, New York, NY 10027 USA
[2] Brown Univ, Dept Chem, Providence, RI 02912 USA
[3] Kyoto Univ, Inst Chem Res, Kyoto 6110011, Japan
来源：
ORGANIC LETTERS | 2013年 / 15卷 / 18期
基金：
美国国家科学基金会;
关键词：
NITROXIDE DERIVATIVES; MAGNETIC-RESONANCE; ORGANIC-SOLVENTS; FULLERENE C-60; H-2-AT-C-60; HYDROGEN; H-2;
D O I：
10.1021/ol402111x
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Relaxation rates of endo-H2O in H2O@Open-C-60 in the presence of a nitroxide radical and of their nitroxide derivatives have been measured and are compared with effects for endo-H-2 in similar cages. T-1 relaxation enhancement of the endo-H2O and H-2 induced by either intra- or intermolecular interaction is relatively insensitive to the presence of a cage opening. Enhancement of intermolecular relaxation is observed, however, when the cage opening has an OH group.
引用
收藏
页码：4746 / 4749
页数：4
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