Optoelectrochemical properties of the copolymer of 2,5-di(4-methylthiophen-2-yl)-1-(4-nitrophenyl)-1H-pyrrole monomer with 3,4-ethylenedioxythiophene

AK M., Tanyeli C., Akhmedo D. M., Toppare L.

THIN SOLID FILMS, cilt.516, sa.12, ss.4334-4341, 2008 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 516 Sayı: 12
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1016/j.tsf.2008.01.013
  • Dergi Adı: THIN SOLID FILMS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.4334-4341
  • Anahtar Kelimeler: conducting polymers, electro-optical effects, thin films, copolymerization, spectroelectrochemistry, SOLUBLE CONDUCTING POLYMER, INFRARED ELECTROCHROMISM, WINDOWS
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Copolymer of 2,5-di(4-methylthiophen-2-yl)-1-(4-nitrophenyl)-1H-pyrrole (MTNP) with 3,4-ethylene dioxythiophene (EDOT) was electro-chemically 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 m due to the pi-pi* transition was found to be 500 mn 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%).