THE NATURE OF FULLERENE SOLUTION COLLISIONAL DYNAMICS - A C-13 DNP AND NMR-STUDY OF THE C60/C6D6/TEMPO SYSTEM

被引：22

作者：

DORN, HC

GU, J

BETHUNE, DS

JOHNSON, RD

YANNONI, CS

机构：

[1] Department of Chemistry, Virginia Polytechnic Institute, State University, Blacksburg

来源：

CHEMICAL PHYSICS LETTERS | 1993年 / 203卷 / 5-6期

关键词：

D O I：

10.1016/0009-2614(93)85308-B

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：

The solution dynamical behavior of the novel fullerene, C60 and free radical nitroxide, TEMPO in deuterated benzene (C6D6) was examined utilizing a flow liquid-liquid intermolecular transfer (L2IT) C-13 dynamic nuclear polarization (DNP) technique. The C-13 DNP ultimate enhancement, C-13 NMR paramagnetic contact shift, and corresponding spin-lattice nuclear relaxation rates are consistent with a model for the C60/TEMPO nuclear-electron interaction which is dominated by a rotationally driven dipolar relaxation mechanism. A dipolar dominated enhancement was also observed for a solid-liquid intermolecular transfer (SLIT) C-13 DNP experiment employing the C60/C6D6 system with polarization transfer from a silica phase immobilized nitroxide (SPIN) sample.

引用

页码：549 / 554

页数：6

共 22 条

[1] REFINEMENT AND LOCATION OF HYDROGEN ATOMS IN NITROXIDE 2,2,6,6-TETRAMETHYL-4-PIPERIDINOL-1-OXYL [J].

BERLINER, LJ .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL CRYSTALLOGRAPHY AND CRYSTAL CHEMISTRY, 1970, B 26 :1198-&

[2] DYNAMICS OF INTERSPECIES HYDROGEN-BONDING OF A FLUORINATED ALCOHOL AND A NITROXIDE FREE-RADICAL [J].

BORAH, B ;

BATES, RD .

JOURNAL OF CHEMICAL PHYSICS, 1981, 74 (03) :1538-1545

[3] Transfer of H-1 and C-13 Dynamic Nuclear Polarization from Immobilized Nitroxide Radicals to Flowing Liquids [J].

Dorn, H. C. ;

Glass, T. E. ;

Gitti, R. ;

Tsai, K. H. .

APPLIED MAGNETIC RESONANCE, 1991, 2 (01) :9-27

[4] THE FLOW TRANSFER OF A BOLUS WITH H-1 DYNAMIC NUCLEAR-POLARIZATION FROM LOW TO HIGH MAGNETIC-FIELDS [J].

DORN, HC ;

GITTI, R ;

TSAI, KH ;

GLASS, TE .

CHEMICAL PHYSICS LETTERS, 1989, 155 (02) :227-232

[5] FREE-RADICAL INDUCED NUCLEAR MAGNETIC-RESONANCE SHIFTS - COMMENTS ON CONTACT SHIFT MECHANISMS [J].

DRANEY, D ;

KINGSBURY, CA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1981, 103 (05) :1041-1047

[6]

Hausser K. H., 1968, ADV MAGNETIC OPTICAL, V3, P79

[7] BESTIMMUNG DER HOCHFELDGRENZE DER DYNAMISCHEN KERNPOLARISATION AUS DER DISPERSION DER KERNRELAXATION [J].

HAUSSER, KH .

ZEITSCHRIFT FUR PHYSIK, 1965, 183 (03) :265-&

[8] BOND LENGTHS IN FREE MOLECULES OF BUCKMINSTERFULLERENE, C60, FROM GAS-PHASE ELECTRON-DIFFRACTION [J].

HEDBERG, K ;

HEDBERG, L ;

BETHUNE, DS ;

BROWN, CA ;

DORN, HC ;

JOHNSON, RD ;

DEVRIES, M .

SCIENCE, 1991, 254 (5030) :410-412

[9] C-60 ROTATION IN THE SOLID-STATE - DYNAMICS OF A FACETED SPHERICAL TOP [J].

JOHNSON, RD ;

YANNONI, CS ;

DORN, HC ;

SALEM, JR ;

BETHUNE, DS .

SCIENCE, 1992, 255 (5049) :1235-1238

[10]

JOHNSON RD, 1992, CHEM RES, V25, P169

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