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Ferroelectric Switching and Electrochemistry of Pyrrole Substituted Trialkylbenzene-1,3,5-Tricarboxamides
Eindhoven University of Technology, Netherlands.
Eindhoven University of Technology, Netherlands.
Eindhoven University of Technology, Netherlands.
Eindhoven University of Technology, Netherlands.
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2017 (English)In: Journal of Polymer Science Part B: Polymer Physics, ISSN 0887-6266, E-ISSN 1099-0488, Vol. 55, no 8, 673-683 p.Article in journal (Refereed) Published
Abstract [en]

We explore a new approach to organic ferroelectric diodes using a benzene-tricarboxamide (BTA) core connected with C10 alkyl chains to pyrrole groups, which can be polymerized to provide a semiconducting ferroelectric material. The compound possesses a columnar hexagonal liquid crystalline (LC) phase and exhibits ferroelectric switching. At low switching frequencies, an additional process occurs, which leads to a high hysteretic charge density of up to similar to 1000 mC/m(2). Based on its slow rate, the formation of gas bubbles, and the emergence of characteristic polypyrrole absorption bands in the UV-Vis-NIR, the additional process is identified as the oxidative polymerization of pyrrole groups, enabled by the presence of amide groups. Polymerization of the pyrrole groups, which is essential to obtain semiconductivity, is limited to thin layers at the electrodes, amounting to similar to 17 nm after cycling for 21 h. (C) 2017 The Authors. Journal of Polymer Science Part B: Polymer Physics Published by Wiley Periodicals, Inc.

Place, publisher, year, edition, pages
WILEY , 2017. Vol. 55, no 8, 673-683 p.
Keyword [en]
electropolymerization; ferroelectric liquid crystal; interface; nanomaterials; polypyrrole
National Category
Polymer Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-136883DOI: 10.1002/polb.24318ISI: 000397402900003PubMedID: 28344384OAI: oai:DiVA.org:liu-136883DiVA: diva2:1092095
Note

Funding Agencies|Netherlands Organisation for Scientific Research (NWO) [11512]; Ministry of Education, Culture and Science [024.001.035]

Available from: 2017-04-30 Created: 2017-04-30 Last updated: 2017-05-21

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