Experimental assessment of the efficacy of sensitised emission in water from a europium ion, following intramolecular excitation by a phenanthridinyl group
- 23 May 2000
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in New Journal of Chemistry
- Vol. 24 (6) , 377-386
- https://doi.org/10.1039/b001319f
Abstract
The overall quantum yields for phenanthridinium sensitised emission from a europium ion have been measured in H2O and D2O for a series of five structurally related, octadentate ligands in which the distance from the phenanthridinium chromophore to the Eu ion varies from 2.5 to ca. 8.2 Å. Overall quantum yields (pD⩽2) range from 0.25 to 0.012 suggesting that the experimental distance for 50% efficiency of intramolecular energy transfer lies close to 5.5 Å for this system.Keywords
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