NDLI: Frequency dependence of the electrical properties of coordination complexes of transition metals

Content Provider	Royal Society of Chemistry (RSC)
Author	Fendley, Jack J. Jonscher, Andrzej K.
Copyright Year	1973
Abstract	Measurements are reported of the dielectric permittivity Îµ and conductivity σ of two organic molecular solids, nickel-bisquinoxaline-2,3-dithiol (NiQDT) and copper-phthalocyanine (CuPC) in the frequency range 102 < ƒ < 1010 Hz. The results show a strong dispersion of Îµ and σ with frequency and fall broadly into two regions: at low frequencies Îµ falls with increasing ƒ and σ is approximately constant, while at high frequencies Îµ is constant while σ∝ƒn with n < 1. It is pointed out that although the barrier-dominated Maxwell-Wagner mechanism cannot be ruled out, a very likely explanation of the behaviour in the higher frequency range is in terms of electronic carriers hopping either within or between molecules. The low frequency behaviour is consistent with a separate form of hopping characterized by a wider distribution of hopping time constants or it may be due to some form of interfacial barriers blocking the passage of electronic or ionic carriers.
Starting Page	1213
Ending Page	1217
Page Count	5
File Format	PDF
ISSN	03009599
Volume Number	69
Journal	Journal of the Chemical Society, Faraday Transactions 1
DOI	10.1039/F19736901213
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Dielectric Phthalocyanine Blue BN
Content Type	Text
Resource Type	Article
Subject	Chemistry

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Frequency dependence of the electrical properties of coordination complexes of transition metals