| Numéro |
J. Phys. IV France
Volume 114, April 2004
|
|
|---|---|---|
| Page(s) | 505 - 507 | |
| DOI | https://doi.org/10.1051/jp4:2004114117 | |
J. Phys. IV France 114 (2004) 505
DOI: 10.1051/jp4:2004114117
Association of poly(tetrathiafulvalenylethynyl)benzenes in neutral and cationic states
M. Hasegawa1, Y. Kuwatani1 and M. Iyoda1, 11 Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
Abstract
We synthesized a series of
poly(tetrathiafulvalenylethynyl)benzenes and investigated their association
properties in neutral and cationic states. The association constants of
1a and 2a with butylthio substituents in CDCl
3
solution are 1.4 M
-1 and 11.0 M
-1 at 20°C, respectively.
Cationic species derived from 1, 2 and 3 more
easily aggregate in solution. The cation radicals prepared by doping of
1 and 2 with iodine show electrical conductivities as
semiconductors.
Key words. TTF - association - mixed valence state -
dimer
- conductivity.
© EDP Sciences 2004