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Visible and near-infrared emission by samarium(III)-containing ionic liquid mixtures

(2009) INORGANIC CHEMISTRY. 48(7). p.3018-3026
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Abstract
Highly luminescent anionic samarium(III) beta-diketonate and dipicolinate complexes were dissolved in the imidazolium ionic liquid 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, [C(6)mim][Tf(2)N]. The solubility of the complexes in the ionic liquid was ensured by a careful choice of the countercation of the samarium(III) complex. The samarium(III) complexes that were considered are [C(6)mim][SM(tta)(4)], where tta is 2-thenoyltrifluoroacetonate; [C(6)mim][Sm(nta)(4)], where nta is 2-naphthoyltrifluoroacetonate; [C(6)mim][Sm(hfa)(4)], where hfa is hexafluoroacetylacetonate; and [choline](3)-[Sm(dpa)(3)], where dpa is pyridine-2,6-dicarboxylate (dipicolinate) and [choline](+) is (2-hydroxyethyl)trimethyl ammonium. The crystal structures of the tetrakis samarium(III) P-diketonate complexes revealed a distorted square antiprismatic coordination for the samarium(III) ion in all three cases. Luminescence spectra were recorded for the samarium(III) complexes dissolved in the imidazolium ionic liquid as well as in a conventional solvent, that is, acetonitrile or water for the beta-diketonate and dipicolinate complexes, respectively. These experiments demonstrate that [C(6)mim][Tf(2)N] is a suitable spectroscopic solvent for studying samarium(III) luminescence. High-luminescence quantum yields were observed for the samarium(III) beta-diketonate complexes in solution.
Keywords
LIGANDS, FLUORESCENCE, EU3+, WATER, COMPLEXES, IMIDAZOLIUM, MOLECULAR EDIFICES, HIGHLY LUMINESCENT, OPTICAL-PROPERTIES, LANTHANIDE(III) IODIDES

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Chicago
Lunstroot, Kyra, Peter Nockemann, Kristof Van Hecke, Luc Van Meervelt, Christiane Görller-Walrand, Koen Binnemans, and Kris Driesen. 2009. “Visible and Near-infrared Emission by samarium(III)-containing Ionic Liquid Mixtures.” Inorganic Chemistry 48 (7): 3018–3026.
APA
Lunstroot, K., Nockemann, P., Van Hecke, K., Van Meervelt, L., Görller-Walrand, C., Binnemans, K., & Driesen, K. (2009). Visible and near-infrared emission by samarium(III)-containing ionic liquid mixtures. INORGANIC CHEMISTRY, 48(7), 3018–3026.
Vancouver
1.
Lunstroot K, Nockemann P, Van Hecke K, Van Meervelt L, Görller-Walrand C, Binnemans K, et al. Visible and near-infrared emission by samarium(III)-containing ionic liquid mixtures. INORGANIC CHEMISTRY. 2009;48(7):3018–26.
MLA
Lunstroot, Kyra, Peter Nockemann, Kristof Van Hecke, et al. “Visible and Near-infrared Emission by samarium(III)-containing Ionic Liquid Mixtures.” INORGANIC CHEMISTRY 48.7 (2009): 3018–3026. Print.
@article{2045670,
  abstract     = {Highly luminescent anionic samarium(III) beta-diketonate and dipicolinate complexes were dissolved in the imidazolium ionic liquid 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, [C(6)mim][Tf(2)N]. The solubility of the complexes in the ionic liquid was ensured by a careful choice of the countercation of the samarium(III) complex. The samarium(III) complexes that were considered are [C(6)mim][SM(tta)(4)], where tta is 2-thenoyltrifluoroacetonate; [C(6)mim][Sm(nta)(4)], where nta is 2-naphthoyltrifluoroacetonate; [C(6)mim][Sm(hfa)(4)], where hfa is hexafluoroacetylacetonate; and [choline](3)-[Sm(dpa)(3)], where dpa is pyridine-2,6-dicarboxylate (dipicolinate) and [choline](+) is (2-hydroxyethyl)trimethyl ammonium. The crystal structures of the tetrakis samarium(III) P-diketonate complexes revealed a distorted square antiprismatic coordination for the samarium(III) ion in all three cases. Luminescence spectra were recorded for the samarium(III) complexes dissolved in the imidazolium ionic liquid as well as in a conventional solvent, that is, acetonitrile or water for the beta-diketonate and dipicolinate complexes, respectively. These experiments demonstrate that [C(6)mim][Tf(2)N] is a suitable spectroscopic solvent for studying samarium(III) luminescence. High-luminescence quantum yields were observed for the samarium(III) beta-diketonate complexes in solution.},
  author       = {Lunstroot, Kyra and Nockemann, Peter and Van Hecke, Kristof and Van Meervelt, Luc and G{\"o}rller-Walrand, Christiane and Binnemans, Koen and Driesen, Kris},
  issn         = {0020-1669},
  journal      = {INORGANIC CHEMISTRY},
  keyword      = {LIGANDS,FLUORESCENCE,EU3+,WATER,COMPLEXES,IMIDAZOLIUM,MOLECULAR EDIFICES,HIGHLY LUMINESCENT,OPTICAL-PROPERTIES,LANTHANIDE(III) IODIDES},
  language     = {eng},
  number       = {7},
  pages        = {3018--3026},
  title        = {Visible and near-infrared emission by samarium(III)-containing ionic liquid mixtures},
  url          = {http://dx.doi.org/10.1021/ic8020782},
  volume       = {48},
  year         = {2009},
}

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