Electrochemical and optical properties of poly(4-(4-(1<i>H</i>-pyrrol-1-yl)phenyl)-<i>4H</i>-dithieno[3,2-<i>b</i>:2'<i>,</i>3'<i>-d</i>]pyrrole
- 1. KTO Karatay Univ, Dept Met & Mat Engn, TR-42030 Konya, Turkiye
- 2. Bartin Univ, Fac Engn Architecture & Design, Dept Mech Engn, TR-74100 Bartin, Turkiye
- 3. Eskisehir Osmangazi Univ, Fac Sci, Dept Chem, TR-26040 Eskisehir, Turkiye
Description
A novel dithieno[3,2-b:2',3'-d]pyrrole (DTP) derivative, namely, 4-(4-(1H-pyrrol-1-yl)phenyl)-4H-dithieno[3,2-b:2',3'-d]pyrrole (DTP-Ph-Pyr) was synthesized, and its corresponding polymer (P(DTP-Ph-Pyr)) was successfully obtained via electrochemical polymerization. Electrochemical and optical properties of this novel polymer were discussed in detail. It was found that the polymer film also exhibited a reversible electrochromic behavior (orange color in the neutral state and blue color in the oxidized state) with a high optical contrast (52.5% at 950 nm) and coloration efficiency (123 cm(2)/C at 950 nm). Moreover, the electrochemical and optical properties of the polymer were compared with both its electrochromic P(DTP) analogues and its sister polymer structure, poly(1-(4-(1H-pyrrol-1-yl)phenyl)-2,5-di(thiophen-2-yl)-1H-pyrrole) (P(SNS-Ph-Pyr)), possessing same subunit.
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