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Physical Characterization of Organic Radicals by Low-Field Epr Spectrometry

Published online by Cambridge University Press:  25 February 2011

Mehdi Moussavi ,
Marc Beranger ,
Denis Duret ,
Nelly Kernevez  and
Liliane Secourgeon
Mehdi Moussavi
Affiliation:
lETI, a Division of Cea. Ceng 85 X 38041 Grenoble, France
Marc Beranger
Affiliation:
lETI, a Division of Cea. Ceng 85 X 38041 Grenoble, France
Denis Duret
Affiliation:
lETI, a Division of Cea. Ceng 85 X 38041 Grenoble, France
Nelly Kernevez
Affiliation:
lETI, a Division of Cea. Ceng 85 X 38041 Grenoble, France
Liliane Secourgeon
Affiliation:
lETI, a Division of Cea. Ceng 85 X 38041 Grenoble, France
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Abstract

A low-field (0.6 Gauss, 2 MHz) EPR spectrometer providing quantitative parameters is described. It gives informations such as frequency dependence of the linewidth, anisotropy of inhomogeneous line and also the values of T1, T2 and the magnetic susceptibility using simple hypothesis.

The behaviour of different typical π-systems, as well metallic as semiconducting is compared to a radical anion salt, quinolinium bis tetracyano-quinodinemethane Qn(TCNQ)2 considered as a reference.

The materials physical characteristics will be provided by a new variable field (0.6–60 Gauss, 2–200 MHz) which is under realization, for an extended family of organic radicals.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 173: Symposium Q – Advanced Organic Solid State Materials , 1989 , 171
Copyright
Copyright © Materials Research Society 1990

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References

REFERENCES

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