Electrocatalysis at copolymer of 3- Methylthiophene and 3- Hexylthiophene modified electrodes
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Date
2007-03
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Abstract
The electrochemical polymerizations and characterization studies were made for the
monomers 3-hexylthiophene (3HT) and 3-methylthiophene (3MT) with respect to Pt, GC and
Au electrodes. The electrochemical properties of the corresponding polymers poly(3-
hexylthiophene) (P3HT) , poly(3-methylthiophene) (P3MT) were also studied in a monomer
free LiClO4 - acetonitrile solutions. Copolymers were shown to be electrochemically
synthesized from the monomers 3HT and 3MT and showed intermediate electrochemical
properties between their corresponding homopolymers. The optimum copolymer ratio,
polymerization potential and deposition time that are required to obtain the best
electrocatalytic effect was also demonstrated using various redox species. The electrocatalytic
effect of this copolymer was studied on selected inorganic and organic samples. It was found
that poly(3HT-co-3MT) modified platinum electrode is highly selective and sensitive towards these redox species. The detection limits for poly(3HT-co-3MT) modified Pt electrode were also shown for these redox species.
Key words; poly(3-hexylthiophene), poly(3-methylthiophene), poly(3HT-co-3MT),
Electrochemical Polymerization, Electrocatalysis.
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Keywords
poly(3-hexylthiophene); poly(3-methylthiophene;, poly(3HT-co-3MT); Electrochemical Polymerization; Electrocatalysis.