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Surface Enhanced NMR Spectroscopy by Dynamic Nuclear Polarization
被引:466
|作者:
Lesage, Anne
[1
]
Lelli, Moreno
[1
]
Gajan, David
[2
]
Caporini, Marc A.
[3
]
Vitzthum, Veronika
[3
]
Mieville, Pascal
[3
]
Alauzun, Johan
[4
]
Roussey, Arthur
[2
]
Thieuleux, Chloe
[2
]
Mehdi, Ahmad
[4
]
Bodenhausen, Geoffrey
[3
,5
]
Coperet, Christophe
[2
]
Emsley, Lyndon
[1
]
机构:
[1] Univ Lyon, CNRS, ENS Lyon, UCB Lyon 1,Ctr RMN Tres Hauts Champs, F-69100 Villeurbanne, France
[2] Univ Lyon 1, Inst Chim Lyon, CNRS, ESCPE Lyon,UMR 5265,C2P2, F-69100 Villeurbanne, France
[3] Ecole Polytech Fed Lausanne, Inst Sci & Ingn Chim, CH-1015 Lausanne, Switzerland
[4] Univ Montpellier 2, Inst Charles Gerhardt, UMR 5352, F-34095 Montpellier 5, France
[5] Ecole Normale Super, CNRS, Dept Chim, F-75231 Paris 05, France
基金:
瑞士国家科学基金会;
关键词:
SOLID-STATE NMR;
MESOPOROUS SILICA;
ACID GROUPS;
CHEMISTRY;
EXCHANGE;
ROUTE;
D O I:
10.1021/ja104771z
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
It is shown that surface NMR spectra can be greatly enhanced using dynamic nuclear polarization. Polarization is transferred from the protons of the solvent to the rare nuclei (here carbon-13 at natural isotopic abundance) at the surface, yielding at least a 50-fold signal enhancement for surface species covalently incorporated into a silica framework.
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页码:15459 / 15461
页数:3
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