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Chemical Compound Review

Europium(3+)     europium(+3) cation

Synonyms: CHEBI:49591, AR-1J0712, AC1L2Y5B, EU3, Europium, ion(Eu3 )
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High impact information on EU3

  • For the mixed Tb(3+)/Eu(3+) materials, evidence has been found of the inclusion of Eu(3+) ions in the interlayer space by replacing K+ ions, further allowing the activation of Tb(3+)-to-Eu(3+) energy transfer mechanisms [1].
  • At low metal ion concentrations, each dendrimer hosts only one metal ion and when the hosted metal ion is Nd(3+) or Eu(3+), the fluorescence of all the 24 dansyl units of the dendrimer is quenched with unitary efficiency [2].
  • In particular, addition of 2 equiv of nitrate anions to a solution containing the [Ln.1](OTf-)(3) leads to an 11-fold increase of the luminescence intensity for the Eu(3+) and a 7-fold increase for the Tb(3+) complexes [3].
  • Complexation of the lanthanides Eu(3+), Gd(3+), and Tb(3+) with 1,4,7,10-tetrakis(carboxymethyl)-1,4,7,10-tetraazacyclododecane (dota) has been studied in solution by using potentiometry, luminescence spectrometry, and EXAFS [4].
  • Of the 35 positive myasthenic sera (with antibody values, previously determined by isotopic assay, of 0.4-1290 nmol/L) compared in the two assays, 32 tested positive with the Eu(3+) assay [5].

Biological context of EU3

  • This is likely a result of reduced aggregation of europium-regenerated bacteriorhodopsin (bR) upon lipid removal causing more exposure of the binding sites to the Eu(3+) cations [6].
  • It is suggested that Eu(3+) might bind to the PSII reaction center complex and enhance the electron transport rate of PSII CD; however, Eu(3+) treatment does not change the configuration of the PSII reaction center complex [7].

Anatomical context of EU3

  • We have studied the effect of monomerization of the purple membrane lattice, as well as removal of 75% of the lipids, on the binding properties of Eu(3+) ions [6].

Associations of EU3 with other chemical compounds


Analytical, diagnostic and therapeutic context of EU3

  • This solid-phase immunoassay is based on competition between Eu(3+)- or Sm(3+)-labeled antigen and the sample antigen for polyclonal rabbit antibodies [12].
  • The most active fractions were used to label nAChRs for the immunoprecipitation assay, and the bound Eu(3+) was quantified by time-resolved fluorescence [5].
  • Microscopic FTIR spectra show Eu(3+) interacts with both the phosphate groups and nitrogenous bases of DNA, and the formation of [DNA/Eu](n) films induces a change of the conformation of the DNA secondary structure to a certain extent [13].


  1. Photoluminescent layered lanthanide silicates. Ananias, D., Kostova, M., Almeida Paz, F.A., Ferreira, A., Carlos, L.D., Klinowski, J., Rocha, J. J. Am. Chem. Soc. (2004) [Pubmed]
  2. Luminescent lanthanide ions hosted in a fluorescent polylysin dendrimer. Antenna-like sensitization of visible and near-infrared emission. Vicinelli, V., Ceroni, P., Maestri, M., Balzani, V., Gorka, M., Vögtle, F. J. Am. Chem. Soc. (2002) [Pubmed]
  3. Luminescent lanthanide complexes of a bis-bipyridine-phosphine-oxide ligand as tools for anion detection. Charbonnière, L.J., Ziessel, R., Montalti, M., Prodi, L., Zaccheroni, N., Boehme, C., Wipff, G. J. Am. Chem. Soc. (2002) [Pubmed]
  4. Complexing mechanism of the lanthanide cations Eu(3+), Gd(3+), and Tb(3+) with 1,4,7,10-tetrakis(carboxymethyl)-1,4,7,10-tetraazacyclododecane (dota)-characterization of three successive complexing phases: study of the thermodynamic and structural properties of the complexes by potentiometry, luminescence spectroscopy, and EXAFS. Moreau, J., Guillon, E., Pierrard, J.C., Rimbault, J., Port, M., Aplincourt, M. Chemistry (Weinheim an der Bergstrasse, Germany) (2004) [Pubmed]
  5. Determination of anti-acetylcholine receptor antibodies in myasthenic patients by use of time-resolved fluorescence. Rícný, J., Simková, L., Vincent, A. Clin. Chem. (2002) [Pubmed]
  6. Eu3+ binding to europium-regenerated bacteriorhodopsin upon delipidation and monomerization. Heyes, C.D., Reynolds, K.B., El-Sayed, M.A. FEBS Lett. (2004) [Pubmed]
  7. Effect of Eu(3+) on characterization of photosystem II particles from spinach by spectroscopy. Fashui, H. Biological trace element research. (2004) [Pubmed]
  8. Europium III binding and the reorientation of magnetically aligned bicelles: insights from deuterium NMR spectroscopy. Crowell, K.J., Macdonald, P.M. Biophys. J. (2001) [Pubmed]
  9. Luminescent lanthanide complexes with stereocontrolled tris(2-pyridylmethyl)amine ligands: chirality effects on lanthanide complexation and luminescence properties. Yamada, T., Shinoda, S., Sugimoto, H., Uenishi, J., Tsukube, H. Inorganic chemistry. (2003) [Pubmed]
  10. Spectroscopic study and local coordination of polyphosphate colloidal systems. Dias Filho, F.A., Carlos, L.D., Messadeq, Y., Ribeiro, S.J. Langmuir : the ACS journal of surfaces and colloids. (2005) [Pubmed]
  11. Thermosensitive lanthanide complexes of hyaluronan. Vercruysse, K.P., Li, H., Luo, Y., Prestwich, G.D. Biomacromolecules (2002) [Pubmed]
  12. Dual-label time-resolved fluoroimmunoassay for simultaneous detection of myoglobin and carbonic anhydrase III in serum. Vuori, J., Rasi, S., Takala, T., Väänänen, K. Clin. Chem. (1991) [Pubmed]
  13. Layer-by-layer self-assembly of multilayer films containing DNA and Eu3+: their characteristics and interactions with small molecules. Zhou, Y., Li, Y. Langmuir : the ACS journal of surfaces and colloids. (2004) [Pubmed]
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