Funct. Mater. 2015; 22 (3): 338-341.

http://dx.doi.org/10.15407/fm22.03.338

Electroconductivity of anion-radical TCNQ salts containing cations [M(bipy)3]2+ (M - Fe, Ni or Zn)

G.Y.Vasylets[1], A.V.Khotkevich[1],[2], A.S.Bukrinev[1], A.S.Krasnyi[1], V.A.Starodub[3], A.A.Kravchenko[1], V.V.Medviediev[4]

[1] Applied Chemistry Department, V. Karazin Kharkiv National University, 4 Svobody Sq., 61022 Kharkiv, Ukraine
[2] B.Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, 47 Lenin Ave., 61103 Kharkiv, Ukraine
[3] Jan Kochanowski University, Institute of Chemistry, Kielce, 25-406, Poland
[4] STC ”Institute for Single Crystals”, National Academy of Sciences of Ukraine, 60 Lenin Ave., 61178 Kharkiv, Ukraine

Abstract: 

Electrical resistance temperature dependence of three TCNQ anion-radical salts of complex composition containing cations [MII(bipy)3]2+ (M - Fe, Ni or Zn, bipy - 2,2′-dipyridil) have been studied. Measurements have been performed in the range 180-300 K on tableted samples. The compound exhibit semiconducting properties and undergo the Peierls transition. Specific resistance at room temperature is of 7.7 Ω·cm for Fe containing salt and
2.3·10-2 Ω·cm and 2.5·10-2 Ω·cm for salts containing Ni and Zn, respectively.

Keywords: 
tetracyanoquinodimethane, electrical resistance, semiconductor, Peierls transition.

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