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@proceedings{858917, author = {Hermann, Petr and Lubal, Přemysl and Vaněk, Jakub and Polášek, Miloš}, booktitle = {COST D38 Annual Workshop}, keywords = {Macrocyclic ligands; Ln(III) complexes; MRI; thermodynamics; kinetics}, language = {eng}, title = {Thermodynamic and kinetic studies of lanthanide(III) complexes with mono(pyridine-N-oxide) analog of DOTA}, year = {2009} }
TY - CONF ID - 858917 AU - Hermann, Petr - Lubal, Přemysl - Vaněk, Jakub - Polášek, Miloš PY - 2009 TI - Thermodynamic and kinetic studies of lanthanide(III) complexes with mono(pyridine-N-oxide) analog of DOTA KW - Macrocyclic ligands KW - Ln(III) complexes KW - MRI KW - thermodynamics KW - kinetics N2 - Ln(III) complexes of H4dota and its derivatives are utilized in many areas of medicine (e.g. complexes of metal radioisotopes as 90Y, 153Sm, 166Ho, 177Lu in nuclear medicine, Gd(III) complexes as MRI contrast agents, Eu(III) or Tb(III) complexes as luminescent probes). In this contribution, the thermodynamic and kinetic properties of Y(III) and Ln(III) complexes (Ln = Ce, Eu, Gd, Yb) of the mono(pyridine-N-oxide) H4dota derivative were studied by molecular absorption and emission spectroscopies (in UV/VIS region, luminescence, TRFS). The mechanisms of complex formation (pH = 5.0-6.0, t = 25 degrees of Celsius, I = 0.1 M KCl) and acid-assisted complex dissociation (t = 25-70 degrees of Celsius, I = 3.0 M (Na,H)ClO4) were proposed. Achieved results can be used for fluorimetric determination of Ln(III) ions in mixture. ER -
HERMANN, Petr, Přemysl LUBAL, Jakub VANĚK a Miloš POLÁŠEK. Thermodynamic and kinetic studies of lanthanide(III) complexes with mono(pyridine-N-oxide) analog of DOTA. In \textit{COST D38 Annual Workshop}. 2009.
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