Metallic conductivity of Langmuir-Blodgett films based on ditetradecyldimethylammonium-Au(dmit)(2), where dmit is 1,3 dithiol-2-thione-4,5-dithiolate

Conductive Langmuir-Blodgett films of ditetradecyldimethylammonium-Au(dmit) (2) (dmit=1,3 dithiol-2-thione-4,5-dithiolate) have been fabricated without the use of matrix molecules. The in-plane de conductivity was as high as 4 0 S/cm after electrochemical oxidation at room temperature. A metallic cond uctivity with a negative temperature derivative was observed in the tempera ture range of 250-300 K. At lower temperatures, the temperature dependence of the conductivity was of Arrhenius' type with an activation energy of 2.5 meV.