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@article{1439564,
author = {Smrčka, Filip and Lubal, Přemysl},
article_location = {Cambridge},
article_number = {10},
doi = {http://dx.doi.org/10.1039/c8nj00255j},
keywords = {LANTHANIDE(III) COMPLEXES; METAL COMPLEXES; LUMINESCENCE; DISSOCIATION; EQUILIBRIA; STABILITY; PROBES; SENSOR},
language = {eng},
issn = {1144-0546},
journal = {New Journal of Chemistry},
title = {The time-resolved fluorescence study of kinetics and thermodynamics of Eu(III) and Tb(III) complexes with the DO2A macrocyclic ligand},
url = {http://dx.doi.org/10.1039/c8nj00255j},
volume = {42},
year = {2018}
}
TY - JOUR
ID - 1439564
AU - Smrčka, Filip - Lubal, Přemysl
PY - 2018
TI - The time-resolved fluorescence study of kinetics and thermodynamics of Eu(III) and Tb(III) complexes with the DO2A macrocyclic ligand
JF - New Journal of Chemistry
VL - 42
IS - 10
SP - 7993-8000
EP - 7993-8000
PB - ROYAL SOC. CHEMISTRY
SN - 11440546
KW - LANTHANIDE(III) COMPLEXES
KW - METAL COMPLEXES
KW - LUMINESCENCE
KW - DISSOCIATION
KW - EQUILIBRIA
KW - STABILITY
KW - PROBES
KW - SENSOR
UR - http://dx.doi.org/10.1039/c8nj00255j
N2 - The thermodynamics of the interaction of the H(2)DO2A (= 1,4,7,10-tetraazacyclododecane-1,7-diacetic acid) macrocyclic ligand with both Eu(III) and Tb(III) ions was studied by means of luminescence spectroscopy in steady-state and time-resolved modes. It was shown that it is possible to calculate stability constants for both complexes that agree with values determined by other experimental techniques. The study of the formation and dissociation of both Ln(III) complexes shows that there is no significant difference in their reactivity if they contain three (Eu) or two (Tb) water molecules in their coordination shell. The two species of ligands present in the formation reaction, HL- and L2-, differ in their reactivity, which can be explained by the difference in charge and the presence of a proton in the macrocyclic cavity. A detailed study of the dissociation reaction proved that the reaction mechanism consists of several pathways of intermediates, which differ in their structure and rate of decomposition.
ER -
SMRČKA, Filip a Přemysl LUBAL. The time-resolved fluorescence study of kinetics and thermodynamics of Eu(III) and Tb(III) complexes with the DO2A macrocyclic ligand. \textit{New Journal of Chemistry}. Cambridge: ROYAL SOC. CHEMISTRY, 2018, roč.~42, č.~10, s.~7993-8000. ISSN~1144-0546. Dostupné z: https://dx.doi.org/10.1039/c8nj00255j.
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