Enhancement of 13C NMR signals in solid C60 and C70 using laser-polarized xenon

被引：36

作者：

Brunner, E ^{[1
]}

Haake, M

Pines, A

Reimer, JA

Seydoux, R

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：

CHEMICAL PHYSICS LETTERS | 1998年 / 290卷 / 1-3期

关键词：

D O I：

10.1016/S0009-2614(98)00473-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

NMR signals emanating from surface nuclei of solids may be enhanced by the transfer of spin polarization from laser-polarized noble gases via SPINOE (spin polarization induced nuclear Overhauser effect). The present contribution describes experiments in which the spin polarization is transferred under magic angle spinning (MAS) from laser-polarized Xe-129 to C-13, a nuclear spin with a low gyromagnetic ratio in the fullerenes C-60 and C-70, polycrystalline materials with a low surface area. In C-70, differential enhancement of the NMR is observed for the different atomic sites in the molecule. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：112 / 116

页数：5

共 28 条

[1]

ALBERT MS, 1994, NATURE, V370, P199, DOI 10.1038/370199a0

[2] TEMPERATURE-DEPENDENCE OF PB-207 MAS SPECTRA OF SOLID LEAD NITRATE - AN ACCURATE, SENSITIVE THERMOMETER FOR VARIABLE-TEMPERATURE MAS [J].

BIELECKI, A ;

BURUM, DP .

JOURNAL OF MAGNETIC RESONANCE SERIES A, 1995, 116 (02) :215-220

[3] 2-DIMENSIONAL C-13 NMR-STUDY OF ORIENTATIONAL ORDERING IN SOLID C60 [J].

BLINC, R ;

SELIGER, J ;

DOLINSEK, J ;

ARCON, D .

PHYSICAL REVIEW B, 1994, 49 (07) :4993-5002

[4] THE RELATION BETWEEN THE XE-129 NMR CHEMICAL-SHIFTS OF XENON IN THE ZEOLITES NAX, NAY AND CUNAY [J].

BODDENBERG, B ;

HARTMANN, M .

CHEMICAL PHYSICS LETTERS, 1993, 203 (2-3) :243-247

[5] Surface NMR using laser-polarized 129Xe under magic angle spinning conditions [J].

Brunner, E ;

Seydoux, R ;

Haake, M ;

Pines, A ;

Reimer, JA .

JOURNAL OF MAGNETIC RESONANCE, 1998, 130 (01) :145-148

[6] XE-129 AND XE-131 NMR OF XENON ON SILICA SURFACES AT 77 K [J].

CHO, G ;

MORAN, LB ;

YESINOWSKI, JP .

APPLIED MAGNETIC RESONANCE, 1995, 8 (3-4) :549-572

[7] High-volume production of laser-polarized Xe-129 [J].

Driehuys, B ;

Cates, GD ;

Miron, E ;

Sauer, K ;

Walter, DK ;

Happer, W .

APPLIED PHYSICS LETTERS, 1996, 69 (12) :1668-1670

[8] 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

[9] 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

[10] 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

← 1 2 3 →