2 mm waveband saturation transfer electron paramagnetic resonance of conducting polymers

被引：6

作者：

Krinichnyi, V. I. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Problems Chem Phys, Chernogolovka 142432, Russia

来源：

JOURNAL OF CHEMICAL PHYSICS | 2008年 / 129卷 / 13期

关键词：

D O I：

10.1063/1.2977991

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 2 mm waveband (140 GHz) saturation transfer electron paramagnetic resonance (ST-EPR) spectroscopy has been employed to characterize the very slow microsecond to millisecond librational macromolecular dynamics of a wide range of conducting polymers. It is possible at this waveband to determine separately spin relaxation and dynamics affecting ST-EPR spectra. Higher microwave frequency provides substantial increases sensitivity of the method to the anisotropic macromolecular motion in conducting polymers and broadens the interval of correlation times up to 1-80 ms, thereby extending the slow-motion limit for ST-EPR by two orders of magnitude compared with convenient wavebands EPR. (C) 2008 American Institute of Physics.

引用

页数：8

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