A new processable electrochromic polymer based on an electron deficient fluorene derivative with a high coloration efficiency


Çarbaş B. B. , Kivrak A. , ÖNAL A. M.

Electrochimica Acta, cilt.58, sa.1, ss.223-230, 2011 (SCI Expanded İndekslerine Giren Dergi) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 58 Konu: 1
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1016/j.electacta.2011.09.037
  • Dergi Adı: Electrochimica Acta
  • Sayfa Sayıları: ss.223-230

Özet

A new fluorenone based soluble polymer, namely poly(2,7-bis-(3,3-dihexyl-3, 4-dihydro-2H-thieno[3,4-b][1,4]dioxepin-6-yl)-fluoren-9-one) (PPFP), containing propylenedioxythiophene (ProDOT) as a donor and fluorenone (FO) as an acceptor group is highlighted. Electrochemical polymerization of 2,7-bis-(3,3-dihexyl-3, 4-dihydro-2H-thieno[3,4-b][1,4]dioxepin-6-yl)-fluoren-9-one (PFP) was achieved in dichloromethane/acetonitrile mixture with 0.1 M tetrabutylammonium hexafluorophosphate via potential cycling. The polymer shows an electrochromic behavior, a color change from orange to dark blue during oxidation with a high coloration efficiency (422 cm2/C at 684 nm) and orange to yellow during reduction with high optical and electrochemical stability as compared to its close analogues, in addition it is found to be both p and n dopable. Furthermore, this soluble polymer exhibits fluorescent properties (the emission of orange light (578 nm) in THF solution). © 2011 Elsevier Ltd. All rights reserved.