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Electrochemical polymerization of 9-fluorenecarboxylic acid and its electrochromic device application
Date
2008-09-01
Author
Bezgin, Buket
CİHANER, ATİLLA
Önal, Ahmet Muhtar
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Poly(9-fluorenecarboxylic acid) (PFCA) was synthesized by electrochemical oxidation of 9-fluorenecarboxylic acid (FCA) using a mixture of nitromethane and boron trifluoride diethyl etherate as the solvent and tetrabutylammonium tetrafluoroborate as the supporting electrolyte. An insoluble and conducting brownish-orange film was deposited on the electrode surface, both during repetitive cycling and constant potential electrolysis at 1.15 V. Characterization of the polymer film has been carried out using Fourier Transform Infrared spectroscopy technique and thermal behavior was studied via thermal gravimetric analysis. Structural analysis showed that the polymerization of FCA occurred at 2,7-position. Spectroelectrochemical behavior of the polymer film on indium tin oxide working electrode was studied by recording the electronic absorption spectra, in-situ, in monomer-free electrolytic solution at different potentials and it is found that the PFCA film can be reversibly cycled between 0.0 V and 1.2 V Furthermore, a dual type electrochromic device based on PFCA was constructed and its spectroelectrochemical properties were investigated. The electrochromic device exhibits color change from transparent to dark blue with a good open circuit memory.
Subject Keywords
Materials Chemistry
,
Electronic, Optical and Magnetic Materials
,
Surfaces, Coatings and Films
,
Surfaces and Interfaces
,
Metals and Alloys
URI
https://hdl.handle.net/11511/42983
Journal
THIN SOLID FILMS
DOI
https://doi.org/10.1016/j.tsf.2008.02.003
Collections
Department of Chemistry, Article
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B. Bezgin, A. CİHANER, and A. M. Önal, “Electrochemical polymerization of 9-fluorenecarboxylic acid and its electrochromic device application,”
THIN SOLID FILMS
, pp. 7329–7334, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/42983.