Electronegative oligothiophenes based on a hexafluorocyclopentene-annelated thiophene unit.
[Structure: see text] The synthesis of hexafluorocyclopenta[c]thiophene and its based oligothiophenes is described. The effectiveness of a hexafluorocyclopentene unit to lower the LUMO level without disturbing the effective conjugation could be unambiguously clarified by spectroscopic measurements and X-ray analysis.
Ie
Yutaka
Y
The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan.
Umemoto
Yoshikazu
Y
Kaneda
Takahiro
T
Aso
Yoshio
Y