Electrochemical Preparation and Characterization of Poly-phenylthiophenes Derivatives.
| Introduction:
Conducting polymers have attracted attention due to their potential use in rechargeable batteries [1], electrochromic display devices [2], and supercapacitors [3]. Polyheterocycles have become important in these areas due to their facile electrochemical polymerization and doping, with polythiophenes exhibiting especially promising properties in their conducting and neutral states [4]. Although p-type doping has been well investigated, n-type doping are comparatively rare due to the poor stability of the polymers at the extreme negative potentials [5]. Proposal: A series of 3-(p-X-phenyl) thiophene monomers (X= -H, -CH3, -OCH3, -COCH3, -COOC2H5,-NO2) will be electrochemically polymerized to furnish polymer films that can be reversibly reduced and oxidized (n- and p- doped). The oxidation potentials of the monomers and formal potentials of the n- and p- doping processes of polymers will be correlated with resonance and inductive effects of the substituents on the phenyl ring. The conductivity of the prepared polymer films will be measured as well as the spectroscopic studies. |
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