Journal article
Major Effect of Electropolymerization Solvent on Morphology and Electrochromic Properties of PEDOT Films
Chemistry of Materials, Vol.22(13), pp.4019-4025
Jul/2010
Abstract
Although significant efforts were devoted to improving the properties of conductive polymers, the effects of solvent and supporting electrolytes on the morphology and electrochromic features of electropolymerized materials have been scantly investigated. In this work, the effects of the polymerization conditions, such as the solvents and supporting electrolytes, on the morphological structure and electrochromic properties of PEDOT films were systematically studied. Surprisingly, we find a very significant solvent effect and a small supporting electrolyte effect. We show that morphological properties also strongly correlate with electrochromic properties. Films prepared in propylene carbonate have a smoother structure than those prepared in acetonitrile and this leads to superior electrochromic properties, such as an exceptionally high contrast ratio (71%), transparency in the doped state (80%), and coloration efficiency (193 cm(2)/C) for the films prepared in propylene carbonate. Significant differences between propylene carbonate and acetonitrile were explained by different solubilities of EDOT oligomers produced during initial stages of electropolymerization in these solvents.
Details
- Title
- Major Effect of Electropolymerization Solvent on Morphology and Electrochromic Properties of PEDOT Films
- Creators
- Elena Poverenov (null) - The Weizmann Institute of ScienceMao Li (null)Arkady Bitler (null) - 972WIS_INST___100Michael Bendikov (null) - The Weizmann Institute of Science
- Resource Type
- Journal article
- Publication Details
- Chemistry of Materials, Vol.22(13), pp.4019-4025; Jul/2010
- Number of pages
- 7
- Language
- English
- DOI
- https://doi.org/10.1021/cm100561d
- Grant note
- Israel Science Foundation; Israel Ministry of Science; Helen and Martin Kimmel Center for Molecular Design; DuPont Young Professor AwardWe thank Dr. Yishay Feldman for performing XRD measurements, Dr. Asit Patra for synthesis of TER-EDOT and Dr. Yair Wijsboom for fruitful discussions. We thank the Israel Science Foundation, Israel Ministry of Science (IMOS-Russia program) and the Helen and Martin Kimmel Center for Molecular Design for financial support. M.B. is the incumbent of the Recanati career development chair, a member ad personam of the Lise Meitner-Minerva Center for Computational Quantum Chemistry, and acknowledges support from a DuPont Young Professor Award._ALMAME_DELIMITER_
- Record Identifier
- 993264071603596
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