High-field DNP spectrometer for liquids

被引：47

作者：

Denysenkov, V. P. ^{[1
]}

Prandolini, M. J. ^{[1
]}

Krahn, A. ^{[2
,3
]}

Gafurov, M. ^{[1
]}

Endeward, B. ^{[1
]}

Prisner, T. F. ^{[1
]}

机构：

[1] Univ Frankfurt, Inst Phys & Theoret Chem, Ctr Biomol Magnet Resonance, D-60438 Frankfurt, Germany

[2] Bruker Elekt GmbH, Rheinstetten, Germany

[3] Ecole Normale Super Lyon, CNRS, Chim Lab, UMR, F-69364 Lyon, France

来源：

APPLIED MAGNETIC RESONANCE | 2008年 / 34卷 / 3-4期

关键词：

D O I：

10.1007/s00723-008-0127-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The construction of a prototype 400 MHz/260 GHz (9.2 T) liquid-state dynamic nuclear polarization (DNP) spectrometer is described. For this purpose a 400 MHz Bruker Avance nuclear magnetic resonance spectrometer was extended with a 260 GHz microwave setup including microwave sources (45 mW continuous-wave and 200 mW pulsed output power), a metal-dielectric waveguide transmission system for decoupling of microwave excitation and reflection, which can also be used for electron paramagnetic resonance (EPR) detection, and special double-resonance structures which have been developed to avoid microwave heating of aqueous samples during DNP experiments. Microwave performance and first EPR and DNP applications on nitroxide radicals in water at room temperature are presented.

引用

页码：289 / 299

页数：11

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