Electrochemical copolymerization and characterization of dianilines linked by polyether bridge with aniline |
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Authors: | Seha Tirkeş Ahmet M Önal |
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Affiliation: | 1.Chemistry Group, Faculty of Engineering,At?l?m University,Ankara,Turkey;2.Department of Chemistry,Middle East Technical University,Ankara,Turkey |
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Abstract: | Copolymer of aniline and triethylene glycol bis(o-aminophenyl) ether was synthesized by constant potential electrolysis. Cyclic voltammogram of the copolymer films recorded
in the monomer-free electrolytic solution revealed that the redox behavior of the films approaches to that of poly(triethylene
glycol bis(o-aminophenyl) ether) with increasing amount of triethylene glycol bis(o-aminophenyl) in the feed ratio. Copolymerization was investigated by in situ recording the changes in the electronic absorption
spectrum during electrolysis. The free standing copolymer film was characterized utilizing Fourier transform infrared spectrometer,
and spectroelectrochemical behavior of the copolymer was investigated via in situ UV–vis spectroscopic technique. Besides
the electron spin resonance study of the copolymer film, the different morphologies of the polymers were examined by scanning
electron microscopy and the copolymerization was confirmed. The temperature dependence conductivity of the copolymer film
was measured by four-probe technique in the temperature range of 100–300 K, and the calculated parameters showed that conduction
mechanism fits to variable range hopping. |
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