A Case of Self-Organization in Highly Emissive EuIII Ionic Liquids

João P. Leal, Mani Outis, Maria H. Casimiro, Luis M. Ferreira, Fábio Fernandes, Bernardo Monteiro, César A. T. Laia, Cláudia C.L. Pereira

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Intrinsic photoluminescent ionic liquids based on europium(III) tetrakis(β-diketonate) complexes with a tetraalkylphosphonium as the counterion were synthesized. Two are room temperature ionic liquids; [P6,6,6,14][Eu(fod)4] (1) {fod is 1,1,1,2,2,3,3-heptafluoro-7,7-dimethyloctane-4,6-dionate} and [P6,6,6,14][Eu(fod)3(dbm)] (2) {dbm is dibenzoylmethanate}, while calorimetric measurements showed a melting point at 415 K for [P6,6,6,14][Eu(dbm)4] (3). The luminescence quantum yields determined for 1, 2, and 3 are 34, 59 %, and 64 %, respectively. The photoluminescence and thermochemical properties of the complexes were investigated in detail and the influence of the long chain tetraalkylphosphonium counterion, together with the aromatic diketone ligand, on the unusual thermal behavior of 2 is discussed.

Original languageEnglish
Pages (from-to)3429-3434
Number of pages6
JournalEuropean Journal of Inorganic Chemistry
Volume2017
Issue number28
DOIs
Publication statusPublished - 2017

Fingerprint

Ionic Liquids
Europium
Quantum yield
Melting point
Luminescence
Photoluminescence
Ligands
Temperature
Hot Temperature
tris(1,1,1,2,2,3,3-heptafluoro-7,7-dimethyl-4,6- octanedionato)europium(III)

Keywords

  • Europium
  • Ionic liquids
  • Photochemistry
  • Thermochemistry
  • Trihexyltetradecylphosphonium

Cite this

@article{9ef75a3e15904800a0307a524347642a,
title = "A Case of Self-Organization in Highly Emissive EuIII Ionic Liquids",
abstract = "Intrinsic photoluminescent ionic liquids based on europium(III) tetrakis(β-diketonate) complexes with a tetraalkylphosphonium as the counterion were synthesized. Two are room temperature ionic liquids; [P6,6,6,14][Eu(fod)4] (1) {fod is 1,1,1,2,2,3,3-heptafluoro-7,7-dimethyloctane-4,6-dionate} and [P6,6,6,14][Eu(fod)3(dbm)] (2) {dbm is dibenzoylmethanate}, while calorimetric measurements showed a melting point at 415 K for [P6,6,6,14][Eu(dbm)4] (3). The luminescence quantum yields determined for 1, 2, and 3 are 34, 59 {\%}, and 64 {\%}, respectively. The photoluminescence and thermochemical properties of the complexes were investigated in detail and the influence of the long chain tetraalkylphosphonium counterion, together with the aromatic diketone ligand, on the unusual thermal behavior of 2 is discussed.",
keywords = "Europium, Ionic liquids, Photochemistry, Thermochemistry, Trihexyltetradecylphosphonium",
author = "Leal, {Jo{\~a}o P.} and Mani Outis and Casimiro, {Maria H.} and Ferreira, {Luis M.} and F{\'a}bio Fernandes and Bernardo Monteiro and Laia, {C{\'e}sar A. T.} and Pereira, {Cl{\'a}udia C.L.}",
note = "We thank the Fundacao para a Ciencia e Tecnologia (FCT) for financial support through the UID/Multi/04349/2013 project and the grants SFRH/BPD/108959/2015 (C. C. L. P.) and SFRH/BPD/47087/2008 (B. M.). The NMR spectrometers are part of The National NMR Facility, supported by the FCT (RECI/BBB-BQB/0230/2012). F. F. acknowledges the FCT for the grant IF/00386/2015. This work was also supported by the Associated Laboratory for Sustainable Chemistry - Clean Processes and Technologies - LAQV, which is financed by national funds from the FCT/MEC (UID/QUI/50006/2013) and co-financed by the ERDF under the PT2020 Partnership Agreement (POCI-01-0145-FEDER-007265).",
year = "2017",
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language = "English",
volume = "2017",
pages = "3429--3434",
journal = "European Journal of Inorganic Chemistry",
issn = "1434-1948",
publisher = "Wiley-VCH Verlag Berlin",
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A Case of Self-Organization in Highly Emissive EuIII Ionic Liquids. / Leal, João P.; Outis, Mani; Casimiro, Maria H.; Ferreira, Luis M.; Fernandes, Fábio; Monteiro, Bernardo; Laia, César A. T.; Pereira, Cláudia C.L.

In: European Journal of Inorganic Chemistry, Vol. 2017, No. 28, 2017, p. 3429-3434.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A Case of Self-Organization in Highly Emissive EuIII Ionic Liquids

AU - Leal, João P.

AU - Outis, Mani

AU - Casimiro, Maria H.

AU - Ferreira, Luis M.

AU - Fernandes, Fábio

AU - Monteiro, Bernardo

AU - Laia, César A. T.

AU - Pereira, Cláudia C.L.

N1 - We thank the Fundacao para a Ciencia e Tecnologia (FCT) for financial support through the UID/Multi/04349/2013 project and the grants SFRH/BPD/108959/2015 (C. C. L. P.) and SFRH/BPD/47087/2008 (B. M.). The NMR spectrometers are part of The National NMR Facility, supported by the FCT (RECI/BBB-BQB/0230/2012). F. F. acknowledges the FCT for the grant IF/00386/2015. This work was also supported by the Associated Laboratory for Sustainable Chemistry - Clean Processes and Technologies - LAQV, which is financed by national funds from the FCT/MEC (UID/QUI/50006/2013) and co-financed by the ERDF under the PT2020 Partnership Agreement (POCI-01-0145-FEDER-007265).

PY - 2017

Y1 - 2017

N2 - Intrinsic photoluminescent ionic liquids based on europium(III) tetrakis(β-diketonate) complexes with a tetraalkylphosphonium as the counterion were synthesized. Two are room temperature ionic liquids; [P6,6,6,14][Eu(fod)4] (1) {fod is 1,1,1,2,2,3,3-heptafluoro-7,7-dimethyloctane-4,6-dionate} and [P6,6,6,14][Eu(fod)3(dbm)] (2) {dbm is dibenzoylmethanate}, while calorimetric measurements showed a melting point at 415 K for [P6,6,6,14][Eu(dbm)4] (3). The luminescence quantum yields determined for 1, 2, and 3 are 34, 59 %, and 64 %, respectively. The photoluminescence and thermochemical properties of the complexes were investigated in detail and the influence of the long chain tetraalkylphosphonium counterion, together with the aromatic diketone ligand, on the unusual thermal behavior of 2 is discussed.

AB - Intrinsic photoluminescent ionic liquids based on europium(III) tetrakis(β-diketonate) complexes with a tetraalkylphosphonium as the counterion were synthesized. Two are room temperature ionic liquids; [P6,6,6,14][Eu(fod)4] (1) {fod is 1,1,1,2,2,3,3-heptafluoro-7,7-dimethyloctane-4,6-dionate} and [P6,6,6,14][Eu(fod)3(dbm)] (2) {dbm is dibenzoylmethanate}, while calorimetric measurements showed a melting point at 415 K for [P6,6,6,14][Eu(dbm)4] (3). The luminescence quantum yields determined for 1, 2, and 3 are 34, 59 %, and 64 %, respectively. The photoluminescence and thermochemical properties of the complexes were investigated in detail and the influence of the long chain tetraalkylphosphonium counterion, together with the aromatic diketone ligand, on the unusual thermal behavior of 2 is discussed.

KW - Europium

KW - Ionic liquids

KW - Photochemistry

KW - Thermochemistry

KW - Trihexyltetradecylphosphonium

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U2 - 10.1002/ejic.201700649

DO - 10.1002/ejic.201700649

M3 - Article

VL - 2017

SP - 3429

EP - 3434

JO - European Journal of Inorganic Chemistry

JF - European Journal of Inorganic Chemistry

SN - 1434-1948

IS - 28

ER -