摘要:
Several novel phosphinoxide ligands have been prepared, based on molecular frameworks: pyridine, 2,2'-bipyridine, cavitands, cyclotriphosphazene and 1,3,5-triazine. These compounds form highly luminescent complexes with Eu(III) and Tb(III). Excellent luminescent properties were observed in case of pyridine and 2,2'-bipyridine ligands with photoluminescence quantum yields approaching 25%. Cavitand-based phosphinoxides turned out to be rather poor sensitisers for the lanthanide ion emission. Particularly long emission lifetime was observed in case of pyridine P-oxide complexes of Eu(III) and Tb(III), exceeding 3 ms. (C) 2004 Elsevier B.V. All rights reserved.