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

[11] ANALYSIS OF THE REORIENTATIONAL MOTION OF C-60 IN TOLUENE-D8 AT 303-K [J].