A soluble conducting polymer: 1-Phenyl-2,5-di(2-thienyl)-1H-pyrrole and its electrochromic application

Date

2006-07-28

Author

Tarkuc, S.
Sahmetlioglu, E.
Tanyeli, Cihangir
Akhmedov, I. M.
Toppare, Levent Kamil

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A thiophene-functionalized monomer 1-phenyl-2,5-di(2-thienyl)-1H-pyrrole (PTP) was synthesized. The chemical polymerization of PTP (CPTP) was realized by using FeCl3 as the oxidant. The structures of both the monomer and the soluble polymer (CPTP) were investigated by Nuclear Magnetic Resonance (H-1 and C-13 NMR) and Fourier Transform Infrared (FTIR). The average molecular weight of the chemically synthesized polymer was determined by gel permeation chromatography (GPC) as Mn = 7.2 x 10(3). The electrochemical oxidative polymerization of PTP was carried out via constant-potential electrolysis. Characterizations of the resulting polymer were done by cyclic voltammetry (CV), FTIR, Scanning Electron Microscopy (SEM) and UV-vis Spectroscopy. The conductivity of sample was measured by four-probe technique. Moreover, the spectroelectrochemical and electrochromic properties of the polymer film were investigated. Spectroelectrochemical analysis of P(PTP) revealed electronic transitions at 413, 577 and 884 mn corresponding to pi-pi* transition, polaron, and bipolaron band formations, respectively. Kinetic studies evaluated the switching ability of the P(PTP); the percent transmittance T% was found as 27%. The homopolymer of PTP was used to construct dual-type polymer electrochromic devices (ECDs) against poly(3,4-ethylenedioxythiophene) (PEDOT). Spectroelectrochemistry, electrochromic switching and open circuit stability of the devices were investigated.

Subject Keywords

Electrochemical Polymerization, Conducting Polymer, Electrochromism, Electrochromic Device, Spectroelectrochemistry

URI

https://hdl.handle.net/11511/36509

Journal

ELECTROCHIMICA ACTA

DOI

https://doi.org/10.1016/j.electacta.2006.02.011

Collections

Department of Chemistry, Article

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Citation Formats

S. Tarkuc, E. Sahmetlioglu, C. Tanyeli, I. M. Akhmedov, and L. K. Toppare, “A soluble conducting polymer: 1-Phenyl-2,5-di(2-thienyl)-1H-pyrrole and its electrochromic application,” ELECTROCHIMICA ACTA, pp. 5412–5419, 2006, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/36509.