An indolocarbazole based yellow-to-cyan soluble electrochromic polymer
By Gokce, Gurcan; Ozkut, Merve Icli
Published in Organic Electronics
2018
Abstract
A new donor-acceptor-donor type polymer called poly(3,9-(3,3-didecyl-3,4-propylenedioxythiophene)-5,11-dihydroindolo[3,2-b]carbazole) (P1) was synthesized and characterized electrochemically, spectroelectrochemically and colorimetrically. P1 shows multielectrochromic property; it is yellow in neutral state, and it changes color from yellow to khaki upon oxidation. Further oxidation causes the khaki color to turn green and then green to cyan, and upon reduction, the color changes from yellow to orange. P1 also has capacitance property and is soluble in common organic solvents. Its band gap was also electrochemically determined as 1.38 eV from cyclic voltammetry and 1.50 eV from differential pulse voltammetry, while optically, it was determined as 1.56 eV.
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