Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/3954
Title: Optoelectrochemical properties of the copolymer of 2,5-di(4-methylthiophen-2-yl)-1-(4-nitrophenyl)-1H-pyrrole monomer with 3,4-ethylenedioxythiophene
Authors: Ak, Metin
Tanyeli, Cihangir
Akhmedov, İdris Mecidoglu
Toppare, Levent
Keywords: Synthesis
Electrochemistry
Knorr-Paal reaction
Friedel Craft
Conducting polymers
Spectroscopic analysis
Electrochromic materials
Electropolymerization
Copolymerization
Chronoamperometry
Electrooptical effects
Fourier transform infrared spectroscopy
Spectroelectrochemistry
Thin films
Publisher: Elsevier B.V.
Abstract: Copolymer of 2,5-di(4-methylthiophen-2-yl)-1-(4-nitrophenyl)-1H-pyrrole (MTNP) with 3,4-ethylene dioxythiophene (EDOT) was electrochemically synthesized and characterized via cyclic voltammetry, Fourier Transform Infrared spectroscopy, Scanning Electron Microscopy, conductivity measurements. Spectroelectrochemical investigations showed that resulting copolymer film has distinct electrochromic properties. It has five different colors (dark purple, red, light grey, green, blue). At the neutral state ? max due to the ?-? * transition was found to be 500 nm and E g was calculated as 1.71 eV. Double potential step chronoamperometry experiment shows that copolymer film has good stability, fast switching time (1.1 s) and high optical contrast (30%). Electrochromic device based on P(MTNP-co-EDOT) and PEDOT was constructed and characterized. Oxidized state of the device shows dark purple color with a blue color reduced state. At interval potentials device has good transparency and colors of the device are yellow and grey. Maximum contrast and switching time of the device were measured as 23% and 1.1 s at 650 nm.
URI: https://hdl.handle.net/11499/3954
ISSN: 0040-6090
Appears in Collections:Fen-Edebiyat Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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