Conduction Through Viscoelastic Phase in a Redox-Active Ionic Liquid at Reduced Temperatures

The phase diagram of the redox active ionic liquid 1‐methyl‐3‐propylimidazolium iodide (PMII) is examined as a function of temperature and iodine concentration. Beyond a threshold concentration of 3.9 M, the formation of higher polyiodides gives rise to a viscoelastic phase upon cooling. Despite of...

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Bibliographic Details
Published in:	Advanced materials (Weinheim) Vol. 24; no. 6; pp. 781 - 784
Main Authors:	Thorsmølle, Verner K., Topgaard, Daniel, Brauer, Jan C., Zakeeruddin, Shaik M., Lindman, Björn, Grätzel, Michael, Moser, Jacques-E.
Format:	Journal Article
Language:	English
Published:	Weinheim WILEY-VCH Verlag 07-02-2012 WILEY‐VCH Verlag
Subjects:	Bonding Chemical Sciences conducting materials Cooling Fysikalisk kemi Iodides Ionic liquids Ionic Liquids - chemistry Kemi liquid crystals Melts mesophases Natural Sciences Naturvetenskap Phase diagrams Physical Chemistry polyiodides Temperature viscoelastic phase Viscoelastic Substances - chemistry Viscoelasticity Viscosity
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Summary:	The phase diagram of the redox active ionic liquid 1‐methyl‐3‐propylimidazolium iodide (PMII) is examined as a function of temperature and iodine concentration. Beyond a threshold concentration of 3.9 M, the formation of higher polyiodides gives rise to a viscoelastic phase upon cooling. Despite of the very high viscosity of such polyiodide‐containing PMII melts a strikingly high conductivity is maintained through Grotthuss‐type bond exchange and ionic conduction.
Bibliography:	istex:5FD3F6085FD6823A86F1AF105FC7E8B1CAA9B64B ark:/67375/WNG-C7DZTGH6-7 ArticleID:ADMA201104230 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2
ISSN:	0935-9648 1521-4095 1521-4095
DOI:	10.1002/adma.201104230