Relaxation and luminescence studies on hydrated bipyridyl- and terpyridyl-based lanthanide complexes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F09%3A10000080" target="_blank" >RIV/00216208:11310/09:10000080 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Relaxation and luminescence studies on hydrated bipyridyl- and terpyridyl-based lanthanide complexes

Popis výsledku v původním jazyce

The synthesis of the novel ligand, based on a 2,2?-bipyridine functionalized by a carboxylate function and a methyleneiminodiacetate group is described. Its europium complex has been prepared and characterized. The spectroscopic properties were studied by means of absorption and luminescence spectroscopy. Although the complex displays a very good sensitization efficiency, the overall luminescence quantum yield is rather poor. This results from strong non-radiative deactivations due to the presence of three water molecules in the first coordination sphere. The relaxation properties of the Gd3+ complexes obtained with two ligands, the latter containing an additional pyridine ring in the aromatic core, were assessed by means of 17O NMR and 1H NMRD. The water exchange rates are faster than those of currently used contrast agents. The rotational correlation time appeared to be long, pointing to a hindered rotation due to the larger aromatic frame.

Název v anglickém jazyce

Relaxation and luminescence studies on hydrated bipyridyl- and terpyridyl-based lanthanide complexes

Popis výsledku anglicky

The synthesis of the novel ligand, based on a 2,2?-bipyridine functionalized by a carboxylate function and a methyleneiminodiacetate group is described. Its europium complex has been prepared and characterized. The spectroscopic properties were studied by means of absorption and luminescence spectroscopy. Although the complex displays a very good sensitization efficiency, the overall luminescence quantum yield is rather poor. This results from strong non-radiative deactivations due to the presence of three water molecules in the first coordination sphere. The relaxation properties of the Gd3+ complexes obtained with two ligands, the latter containing an additional pyridine ring in the aromatic core, were assessed by means of 17O NMR and 1H NMRD. The water exchange rates are faster than those of currently used contrast agents. The rotational correlation time appeared to be long, pointing to a hindered rotation due to the larger aromatic frame.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

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Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

Dalton Transactions

ISSN

1477-9226

e-ISSN

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Svazek periodika

Neuveden

Číslo periodika v rámci svazku

43

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

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Kód UT WoS článku

000271162300016

EID výsledku v databázi Scopus

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