A thermochromic europium(iii) room temperature ionic liquid with thermally activated anion-cation interactions

Bernardo Monteiro, Mani Outis, Hugo Cruz, João Paulo Leal, César A T Laia, Cláudia C L Pereira

Research output: Contribution to journalArticle

11 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)850-853
Number of pages4
JournalChemical Communications
Volume53
Issue number5
DOIs
Publication statusPublished - 16 Jan 2017

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Europium
Ionic Liquids
Ionic liquids
Anions
Cations
Negative ions
Positive ions
Thermodynamic stability
Temperature
Liquids

Cite this

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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.",
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A thermochromic europium(iii) room temperature ionic liquid with thermally activated anion-cation interactions. / Monteiro, Bernardo; Outis, Mani; Cruz, Hugo; Leal, João Paulo; Laia, César A T; Pereira, Cláudia C L.

In: Chemical Communications, Vol. 53, No. 5, 16.01.2017, p. 850-853.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A thermochromic europium(iii) room temperature ionic liquid with thermally activated anion-cation interactions

AU - Monteiro, Bernardo

AU - Outis, Mani

AU - Cruz, Hugo

AU - Leal, João Paulo

AU - Laia, César A T

AU - Pereira, Cláudia C L

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Y1 - 2017/1/16

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AB - 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.

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