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Title: A supramolecular approach to the development of luminescent lanthanide complexes
Author: Magennis, Steven W.
Awarding Body: University of Edinburgh
Current Institution: University of Edinburgh
Date of Award: 2000
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The development of photoactive molecular architectures is a recurring theme in supramolecular chemistry. In this respect, lanthanide complexes continue to play an important role owing to the attractive photophysical properties of the trivalent metal ion. Of particular interest are those complexes in which lanthanide luminescence is sensitised by the ligand, thereby combining many of the favourable characteristics inherent in both species. Work undertaken for this thesis involved the preparation and characterisation of lanthanide complexes and the study of the their luminescent properties; this work is divided into three sections. Firstly, it has been shown that imidodiphosphinates, acting as sensitising ligands, form a hydrophobic shell around lanthanide ions, to give long-lived, highly luminescent complexes. Modification of the imidodiphosphinate ligand allows the first coordination sphere of the metal to be altered, which prevents the binding of deactivating water molecules in solution. Secondly, reaction of a bis(b-diketonate) ligand with lanthanide ions leads to the formation of a novel triple-stranded dinuclear complex. The europium complex is very attractive, with a large absorption coefficient and high luminescence quantum yield. Finally, the ternary complex formation between lanthanide ions, lariat crown ethers and aromatic acids has been investigated with a view to the development of unique homogeneous immunoassay systems.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available