Authors: Aysel Aydın Kocaeren
Publish Date: 2016/03/08
Volume: 23, Issue: 4, Pages: 66-
Abstract
A polymer derived from poly9bis4thiophen34yloxybiphenyl9Hcarbazole containing a carbazole and thiophene group abbreviated as B2 was synthesized via the oxidation method by using FeCl3 as an oxidant Additionally the electrochemical polymer of B2 was synthesized and coated onto an ITO–glass surface via electrochemical oxidative polymerization The electrochemical synthesis of the polymer was performed in 005 M AN/LiClO4 solvent/electrolyte solution containing 01 M concentration of B2 between +03 and +14 V potentials The compounds were characterized by FTIR NMR and elemental analysis techniques The spectroelectrochemical and electrochromic properties of this polymer were also investigated in 005 M AN/LiClO4 solvent/electrolyte solution for 200 s and at a constant potential of +14 V Switching ability of this polymer was measured as the percent transmittance ∆T at its changing point of maximum contrast Additionally the scan rate study was performed at different scan rates 400 300 200 100 50 20 mV/s According to the electrochromic measurements the synthesized polymer had a light blue color when it was oxidized and when it was reduced it had a transparent color As a result the synthesized polymer PB2 can be used to produce new polymeric electrochromic devices and it can be considered a good candidate for applications of electrochromic devices ECDs because of its short response time of 35 s
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