Electrochemical polymerization of an electron deficient fluorene derivative bearing ethylenedioxythiophene side groups

2010-01-01
Bezgin, Buket
Önal, Ahmet Muhtar
A new low band gap polyfluorene derivative, poly(2,7-bis-(2,3-dihydro-thieno[3,4-b][1,4]dioxin-5yl)-fluoren-9-one) (PEFE), containing ethylenedioxythiophene as donor and fluorenone (FO) as an acceptor groups was electrochemically synthesized. Electrochemical polymerization of 2,7-bis-(2,3dihydro-thieno[3,4-b][1,4]dioxin-5-yl)-fluoren-9-one (EFE) was achieved in dichloromethane with 0.1 M tetrabutylammonium-hexafluorophosphate both via and potentiostatic methods. The polymer was characterized by cyclic voltammetry, UV-vis, FT-IR and NMR spectroscopic techniques. Spectroelectrochemical and electrochemical analysis revealed that the polymer film is both p- and n-dopable and can be successfully cycled and switched between its neutral and oxidized/reduced states. Furthermore, PEFE shows electrochromic behavior by a color change from brown to blue with a switching time of 1.65 s during oxidation with a high coloration efficiency (250 cm(2)/C). Fluorescence studies were also performed.

Citation Formats
B. Bezgin and A. M. Önal, “Electrochemical polymerization of an electron deficient fluorene derivative bearing ethylenedioxythiophene side groups,” ELECTROCHIMICA ACTA, vol. 55, no. 3, pp. 779–784, 2010, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35624.