A new blue light emitting and electrochromic polyfluorene derivative for display applications

Carbas B. B., Asil D., Friend R. H., ÖNAL A. M.

ORGANIC ELECTRONICS, cilt.15, sa.2, ss.500-508, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 15 Sayı: 2
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1016/j.orgel.2013.12.003
  • Dergi Adı: ORGANIC ELECTRONICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.500-508
  • Anahtar Kelimeler: Polyfluorene, Electrochromism, Light emitting diode, Conjugated polymer, ELECTRONIC-PROPERTIES, KETO DEFECT, POLYMERS, COPOLYMERS, PHOTOLUMINESCENCE, EMISSION, ELECTROLUMINESCENCE, IRIDIUM, DEVICES, BLENDS
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

A novel blue emitting and electro-chromic conjugated copolymer based on 9,9'dioctylfluorene (F8) and spiro(fluorene- 9,9'-xanthene) (SFX) has been prepared. Optical, photophysical and electrochemical characterizations are given for the synthesized polymer; poly[spirofluorene-co-9,9'dioctylfluorene] P(F8-SFX). Switching of the corresponding polymer between yellow and purple states is demonstrated, and blue emission with Commission Internationale de L'Eclairage (CIE) coordinate at (0.19, 0.15) is obtained from PLED device. The addition of a thin polymer interlayer ((F8) (0.5)-(TFB)(0.5)) is further investigated to maintain color purity. Furthermore, all polymer electrochromic device (ECD) based on P(F8-SFX) and poly(ethylene dioxythiophene) (PEDOT) was constructed. Spectroelectrochemistry and switching ability of the device were also investigated by UV-vis spectroscopy. (C) 2013 Elsevier B.V. All rights reserved.