| Numéro |
J. Phys. IV France
Volume 114, April 2004
|
|
|---|---|---|
| Page(s) | 549 - 551 | |
| DOI | https://doi.org/10.1051/jp4:2004114130 | |
J. Phys. IV France 114 (2004) 549
DOI: 10.1051/jp4:2004114130
Conducting properties of tris-fused tetrathiafulvalenes
T. Mori1, M. Ashizawa1, S. Kimura1, A. Akutsu-Sato1, B. Noda1, Y. Misaki2 and K. Tanaka21 Department of Organic Materials, Tokyo Institute of Technology, O-okayama, Tokyo 152-8552, Japan
2 Division of Molecular Engineering, Graduate School of Engineering, Kyoto University, Yoshida, Kyoto 606-8501, Japan
Abstract
Tris-fused tetrathiafulvalenes, TTC
n-TTPY (
n = 2-5)
have been prepared, and the structural and conducting properties have been
investigated. The neutral crystals of TTC
n-TTPY exhibit low electrical
resistivity as a neutral organics; the lowest is 80
cm in
TTC
2-TTPY. When TTC
n-TTPY is exposed to iodine vapor, the sample
becomes highly conducting in a few minutes, but again becomes insulating on
account of overdoping. When taken out from the iodine atmosphere, the high
conducting state is recovered, and the high conducting sample shows metallic
conductivity and thermoelectric power down to helium temperatures.
Key words. TTF - conductivity - thermoelectric power.
© EDP Sciences 2004