In this work, we present the results obtained for the polymerisation in non
-aqueous media of thiophenes derivatives; [2-Tenal-acetotienone] and [1,5-b
is(2-Tenal)-1,4-pentadien-3-one], via electrochemical deposition on indium
(in oxide OTO) glass electrodes. The I-V curves and electroluminescent resp
onse was evaluated. It was studied that the film thickness affects the meta
l/polymer interface properties during the devices operation. The results in
dicate that diodes and electroluminescent response occurs at 2-3 V though a
nomalous device behaviour can be found when the reverse bias was applied. (
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