Direct access to terpyridine-containing polyazamacrocycles as photosensitizing ligands for Eu(III) luminescence in aqueous media
| Autor: | Claude Picard, Pierre Tisnès, Sébastien Bedel, Chantal Galaup, Jean-Marc Couchet |
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| Rok vydání: | 2005 |
| Předmět: |
Cyclic compound
Aza Compounds Aqueous solution Luminescence Molecular Structure Ligand Pyridines Organic Chemistry Hydrocarbons Cyclic Water Photochemistry Ligands Combinatorial chemistry chemistry.chemical_compound chemistry Europium Covalent bond Functional group Luminescent Measurements Organometallic Compounds Moiety Terpyridine |
| Zdroj: | The Journal of organic chemistry. 70(6) |
| ISSN: | 0022-3263 |
| Popis: | [reaction: see text] The synthesis of new 18-membered hexaazamacrocycles containing a functionalized 2,2':6',2' '-terpyridine moiety as part of the cyclic backbone and three acetate pendant arms is described. The reported synthetic procedure is based on the use of an efficient metal template ion effect which controls the macrocyclization step. This procedure is compatible with some functional groups present in the macrocyclic structure. The photophysical properties of the Eu(III) complexes derived from these ligands were examined in aqueous solutions. Their luminescence lifetimes (tau approximately 1 ms) and quantum yields (13%Phi18%) on one hand, their high kinetic inertness on the other hand, and the presence of additional functionality allowing their covalent conjugation to biomolecules seriously nominate these complexes as very promising candidates for luminescent labeling of biological materials. |
| Databáze: | OpenAIRE |
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