Improving The Optoelectronic Properties of Conducting Polymer Via Polyoxometalate

Year 2020, Volume: 15 Issue: 1, 1 - 8, 18.01.2020

Yasemin Torlak Merve Guzel Metin Ak

Abstract

A composite film formed by combining the
polyoxometalate and the conducting polymer can contribute greatly to the
improvement of the optoelectronic properties of the conducting polymers thanks
to the strong electrostatic interaction between them. In the present work, CT,
namely 2,4,6-tris((9H-carbazol-2-yl)oxy)-s-triazine has been synthesized from
one step reaction of s-triazine and 2-hydroxycarbazole. The
electropolymerization of POM/CT was carried out onto ITO-glass surface in 0.1 M
tetrabutylammonium hexafluorophosphate (TBAPF₆)/acetonitrile (ACN)
solution. The composite film displays enhanced electrochromic performance by
incorporation of POM into the PCT film. The electrochromic and electrochemical
property of the composite film is significantly improved, which results in an
optical contrast of 59% at 670 nm and stability maintain 91% of its initial
electroactivity at the end of the 300 cycles. These results indicate the important
role of POMs in improving optoelectronic properties of PCT to expand application of
electrochromic devices. 

Keywords

Polyoxometalate, Conducting Polymer, Composite Film, Electropolymerization, Electrochromic

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