Synthesis and electrochromic properties of 3,5-diphenyl-2,6-dithiophene-2- yldithieno[3,2-b;2',3'-d]thiophene

Pinar Dundar, Ipek Osken, Onur Sahin, Turan Ozturk*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

A conducting polymer of 3,5-diphenyl-2,6-dithiophene-2-yl-dithieno[3,2- b;2',3'-d]thiophene (Thy 2Ph 2DTT) was synthesized by potentiodynamic method in dichloromethane (DCM)/acetonitrile (AN) (1/1)-NaClO 4/LiClO 4 (0.1:0.1 M) solvent-electrolyte mixture. The resulting polymer was characterized via cyclic voltammetry (CV), Fourier transform infrared (FTIR) and UV-Vis spectroscopy. Its dual type electrochromic device (ECD) with PEDOT was constructed. Spectroelectrochemical and electrochromic properties of the polymer film and the device were investigated in detail. A potential range of 0.0-2.0 V was found to be suitable for operating the P(Thy 2Ph 2DTT)/PEDOT device between red and blue colors. The device displayed good open circuit memory and stability. Properties of Thy 2Ph 2DTT and P(Thy 2Ph 2DTT) were compared with 3,5-diphenyldithieno[3,2-b;2',3'-d]thiophene (Ph 2DTT) and its polymer P(Ph 2DTT), reported previously, which revealed that introduction of thiophenes to the peripherals of Ph 2DTT improved the properties of the corresponding polymer.

Original languageEnglish
Pages (from-to)1010-1015
Number of pages6
JournalSynthetic Metals
Volume162
Issue number11-12
DOIs
Publication statusPublished - Jul 2012

Funding

Authors thank to TUBITAK (TBAG-108T941) for a research grant, ITU for a grant to Onur Sahin (MS), Prof Ahmet Onal of METU for his useful discussions of electrochemical measurements and Unsped Global Lojistik for financial support.

FundersFunder number
METU
TUBITAKTBAG-108T941
International Technological University

    Keywords

    • Dithienothiophenes
    • Electrochromic materials
    • P S
    • Spectroelectrochemistry

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