Conducting polymers of octanoic acid 2-thiophen-3-yl-ethyl ester and their electrochromic properties

Octanoic acid 2-thiophen-3-yl-ethyl ester was synthesized via the reaction of 3-thiophene ethanol with octanoyl chloride. The resulting monomer was electrochemically homopolymerized in the presence of tetrabutylammonium tetrafluoroborate as the supporting electrolyte, in the acetonitrile/borontriflu...

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Bibliographic Details
Published in:Materials chemistry and physics 2005-08, Vol.92 (2), p.413-418
Main Authors: Camurlu, Pinar, Cirpan, Ali, Toppare, Levent
Format: Article
Language:English
Subjects:
Conducting copolymers
Electrochemical polymerization
Electrochromic properties
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Summary:Octanoic acid 2-thiophen-3-yl-ethyl ester was synthesized via the reaction of 3-thiophene ethanol with octanoyl chloride. The resulting monomer was electrochemically homopolymerized in the presence of tetrabutylammonium tetrafluoroborate as the supporting electrolyte, in the acetonitrile/borontrifluoride ethyl ether solvent system. The resulting polymer was characterized using various experimental techniques. Spectroelectrochemistry analysis of the homopolymer reflects electronic transitions at 434, ≈800 and ≈1100 nm, revealing π–π * transition, polaron and bipolaron band formation, respectively, leading to esthetically pleasing color changes between transmissive yellow and blue, with reasonable switching times.
ISSN:0254-0584
1879-3312
DOI:10.1016/j.matchemphys.2005.01.040