Surface NMR using laser-polarized 129Xe under magic angle spinning conditions

被引：54

作者：

Brunner, E ^{[1
]}

Seydoux, R

Haake, M

Pines, A

Reimer, JA

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[3] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA

来源：

JOURNAL OF MAGNETIC RESONANCE | 1998年 / 130卷 / 01期

关键词：

laser-polarized (129)Xe; nuclear magnetic resonance; magic angle spinning; solid surfaces; spin polarization induced nuclear Overhauser effect;

D O I：

10.1006/jmre.1997.1296

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

NMR signals of surface nuclei of solids may be enhanced by the transfer of spin polarization from laser-polarized noble gases. Until now such experiments have not been feasible under conditions of magic angle spinning. In the present contribution it is shown that laser-polarized (129)Xe can be inserted into a spinning rotor under continuous-flow conditions using helium as a carrier gas. Effective adsorption of xenon on the sample occurs at temperatures of about 163-173 K making possible the observation of a spin polarization induced nuclear Overhauser effect (SPINOE) from the laser-polarized (129)Xe to surface (1)H nuclei of SiO(2) (AEROSIL300). This technique opens the way to selectively enhanced high-resolution multinuclear surface NMR experiments. (C) 1998 Academic Press.

引用

页码：145 / 148

页数：4

共 21 条

[11] TRANSIENT METHODS FOR IN-SITU NMR OF REACTIONS ON SOLID CATALYSTS USING TEMPERATURE JUMPS [J].

FERGUSON, DB ;

HAW, JF .

ANALYTICAL CHEMISTRY, 1995, 67 (18) :3342-3348

[12] HIGH-FIELD CROSS-POLARIZATION NMR FROM LASER-POLARIZED XENON TO SURFACE NUCLEI [J].

GAEDE, HC ;

SONG, YQ ;

TAYLOR, RE ;

MUNSON, EJ ;

REIMER, JA ;

PINES, A .

APPLIED MAGNETIC RESONANCE, 1995, 8 (3-4) :373-384

[13] An in situ NMR probe with reagent flow and magic angle spinning [J].

Goguen, P ;

Haw, JF .

JOURNAL OF CATALYSIS, 1996, 161 (02) :870-872

[14] Surface-enhanced NMR using continuous-flow laser-polarized xenon [J].

Haake, M ;

Pines, A ;

Reimer, JA ;

Seydoux, R .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (48) :11711-11712

[15] A NEW MAS NMR PROBE FOR IN-SITU INVESTIGATIONS OF HYDROCARBON CONVERSION ON SOLID CATALYSTS UNDER CONTINUOUS-FLOW CONDITIONS [J].

HUNGER, M ;

HORVATH, T .

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1995, (14) :1423-1424

[16] HIGH-FIELD CROSS-POLARIZATION NMR FROM LASER-POLARIZED XENON TO A POLYMER SURFACE [J].

LONG, HW ;

GAEDE, HC ;

SHORE, J ;

REVEN, L ;

BOWERS, CR ;

KRITZENBERGER, J ;

PIETRASS, T ;

PINES, A ;

TANG, P ;

REIMER, JA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1993, 115 (18) :8491-8492

[17]

MACIEL GE, 1994, NATO ADV SCI INST SE, V447, P401

[18] Enhancement of solution NMR and MRI with laser-polarized xenon [J].

Navon, G ;

Song, YQ ;

Room, T ;

Appelt, S ;

Taylor, RE ;

Pines, A .

SCIENCE, 1996, 271 (5257) :1848-1851

[19]

Pfeifer H, 1994, CHEMINFORM, V26, P31, DOI 10.1007/978-3-642-50049-7_2

[20] Enhancement of surface NMR by laser-polarized noble gases [J].

Room, T ;

Appelt, S ;

Seydoux, R ;

Hahn, EL ;

Pines, A .

PHYSICAL REVIEW B, 1997, 55 (17) :11604-11610

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