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Issue 5, 2017
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A thermochromic europium(III) room temperature ionic liquid with thermally activated anion–cation interactions

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Abstract

We report the first example of an observable and reversible case of thermochromism due to the interaction of an alkylphosphonium (P6,6,6,14)+ with a β-diketonate (1,1,1,2,2,3,3-heptafluoro-7,7-dimethyloctane-4,6-dionate-fod) of an europium(III) tetrakis-β-diketonate room temperature ionic liquid. This thermochromism is characterized by the conversion of a light yellow viscous liquid, at room temperature, to a reddish substance close to 80 °C. The reversibility of this optical effect was highlighted by the thermal stability of the Eu(III) complex.

Graphical abstract: A thermochromic europium(iii) room temperature ionic liquid with thermally activated anion–cation interactions

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Publication details

The article was received on 25 Oct 2016, accepted on 29 Nov 2016 and first published on 05 Dec 2016


Article type: Communication
DOI: 10.1039/C6CC08593H
Citation: Chem. Commun., 2017,53, 850-853
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    A thermochromic europium(III) room temperature ionic liquid with thermally activated anion–cation interactions

    B. Monteiro, M. Outis, H. Cruz, J. P. Leal, C. A. T. Laia and C. C. L. Pereira, Chem. Commun., 2017, 53, 850
    DOI: 10.1039/C6CC08593H

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