Abstract
Luminescence quenching of Eu(fod)3(fod = 6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedionate) by a Cu(ii) macrocycle was studied at 25, 35 and 45 °C by steady-state and flash luminescence techniques, varying the Cu(ii) concentration between 0.2 and 20 mM. Experimental variation of the observed rate constant with the quencher concentration is rationalized in terms of a mechanism involving the quenching of two unequilibrated species by the Cu(ii) macrocycle.
Similar content being viewed by others
References
W. O. Horrocks, Jr., G. F. Schmidt, D. R. Sudnick, C. Kittrel, R. A. Bernheim, Laser-induced lanthanide ion luminescence lifetime measurements by direct excitation of metal ion levels. A new class of structural probe for calcium-binding proteins and nucleic acids, J. Am. Chem. Soc., 1977, 99, 2378.
W. O. Horrocks, Jr., D. R. Sudnick, Lanthanide ion probes of structure in biology. Laser-induced luminescence decay constants provide a direct measure of the number of metal-coordinated water molecules, J. Am. Chem. Soc., 1979, 101, 334.
W. O. Horrocks, Jr., D. R. Sudnick, Lanthanide ion luminescence probes of the structure of biological macromolecules, Acc. Chem. Res., 1981, 14, 384.
W. R. Dawson, J. L. Kropp, M. W. Windsor, Internal-energy-transfer efficiencies in Eu3+ and Tb3+ chelates using excitation to selected ion levels, J. Chem. Phys., 1966, 45, 2410.
J. C. G. Bunzli, E. Moret, V. Foiret, K. J. Schenk, W. Mingzhao, J. Linpei, Structural and photophysical properties of europium(III) mixed complexes with β-diketonates and o-phenanthroline, J. Alloys Compd., 1994, 207/208, 107.
H. Winston, O. J. Marsh, C. K. Suzuki, C. L. Telk, Fluorescence of europium thenoyltrifluoroaceonate. I. Evaluation of laser threshold parameters, J. Chem. Phys., 1963, 39, 267.
P. Dao, A. J. Twarowski, The photophysics of gas phase europium chelates. I. Temperature dependence of luminescence, J. Chem. Phys., 1986, 85, 6823.
L. S. Villata, E. Wolcan, M. R. Féliz, A. L. Capparelli, Competition between intraligand triplet excited state and LMCT on the thermal quenching in β-diketonate complexes of Eu(III), J. Phys. Chem. A, 1999, 103, 5661.
N. Sabbatini, S. Perathoner, S. Dellonte, G. Lattanzi, V. Balzani, Electron and energy transfer processes of excited states of europium(III) and terbium(III) aquo ions and cryptates, J. Less-Common Met., 1986, 126, 329.
M. Féliz, G. Ferraudi, H. Altmiller, Primary photochemical processes in fac-ClRe(CO)3L2(L = 4-phenylpyridine and 4-cyanopyridine): a steady-state and flash photochemical study of reaction products and intermediates, J. Phys. Chem., 1992, 96, 257.
L. S. Villata, E. Wolcan, M. R. Féliz, A. L. Capparelli, Solvent quenching of the 5D0→7F2 emission of Eu(6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedionate)3, J. Photochem. Photobiol., A, 1998, 115, 185.
M. Sarakha, G. Ferraudi, Photophysical features of the Me2(CO)10, M = Mn and Re, solution photochemistry, Inorg. Chem., 1999, 38, 4605.
M. Sarakha, M. Cozzi, G. Ferraudi, Mechanism of (–H)(–alkenyl)Re2(CO)8 formation in 350 nm flash irradiations of Re2(CO)10, Inorg. Chem., 1996, 35, 3806.
L. F. Lindoy, W. Moody, Nuclear magnetic resonance studies of metal complexes using lanthanide shift reagents. Lanthanide-induced shifts in the 1H (and 13C) spectra of diamagnetic metal complexes of quadridentate ligands incorporating oxygen-nitrogen donor atoms, J. Am. Chem. Soc., 1977, 99, 5863.
L. F. Lindoy, H. W. Louie, Dynamic 1H nuclear magnetic resonance line-broadening study of adduct formation between azidocobalt(III) complexes containing organic ligands and lanthanide shift reagent, Inorg. Chem., 1981, 20, 4186.
L. F. Lindoy, H. W. Louie, Nuclear magnetic resonance study of the interaction of lanthanide shift reagent with tris(β-diketonato)cobalt(III) complexes. Kinetics of adduct formation involving slow chemical exchange at ambient temperature, J. Am. Chem. Soc., 1979, 101, 841.
M. F. Hazenkamp, A. M. H. van der Veen, N. Feiken, G. Blasse, Hydrated rare-earth-metal ion-exchanged Zeolite A: characterization by luminescence spectroscopy. Part 2.-The Eu3+ ion, J. Chem. Soc., Faraday Trans., 1992, 88, 141.
M. Albin, R. R. Whittle, W. DeW. Horrocks, Jr., Laser spectroscopic and X-ray structural investigation of europium(III)-oxydiacetate complexes in solution and in the solid state, Inorg. Chem., 1985, 24, 4591.
J. C. G. Bünzli, G. O. Pradervand, The Eu(III) ion as luminescent probe: laser-spectroscopic investigation of the metal ion sites in an 18-crown-6 complex, J. Chem. Phys., 1986, 85, 2489.
N. Sabbatini, S. Perathoner, G. Lattanzi, S. Dellonte, V. Balzani, Influence of fluoride ions on the absorption and luminescence properties of the [Eu ⊂ 2.2.1]3+ and [Tb ⊂ 2.2.1]3+ cryptates, J. Phys. Chem., 1987, 91, 6136.
I. Carmichael, G. Hug, Triplet-triplet absorption spectra of organic molecules in condensed phases, J. Phys. Chem. Ref. Data, 1986, 15, 175.
J. Guerrero, O. E. Piro, E. Wolcan, M. R. Féliz, G. Ferraudi, S. A. Moya, Photochemical and photophysical reactions of fac-rhenium(I) tricarbonyl complexes. Effects from binucleating spectator ligands on excited and ground state processes, Organometallics, 2001, 20, 2842.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Wolcan, E., Villata, L., Capparelli, A.L. et al. Temperature effects on the quenching of the 5D0→7F2 emission of Eu(6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedionate)3 by a Cu(ii) macrocycle. Photochem Photobiol Sci 3, 322–327 (2004). https://doi.org/10.1039/b309582g
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1039/b309582g