The time-resolved fluorescence study of kinetics and thermodynamics of Eu(III) and Tb(III) complexes with the DO2A macrocyclic ligand

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F18%3A00101195" target="_blank" >RIV/00216224:14310/18:00101195 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1039/c8nj00255j" target="_blank" >http://dx.doi.org/10.1039/c8nj00255j</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c8nj00255j" target="_blank" >10.1039/c8nj00255j</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The time-resolved fluorescence study of kinetics and thermodynamics of Eu(III) and Tb(III) complexes with the DO2A macrocyclic ligand

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

The time-resolved fluorescence study of kinetics and thermodynamics of Eu(III) and Tb(III) complexes with the DO2A macrocyclic ligand

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

New Journal of Chemistry

ISSN

1144-0546

e-ISSN

—

Svazek periodika

42

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

7993-8000

Kód UT WoS článku

000434245500053

EID výsledku v databázi Scopus

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