Europium Complexes: Luminescence Boost by a Single Efficient Antenna Ligand.

ABSTRACT: We advance the concept that a single efficient antenna ligand substituted in or added to an otherwise weakly luminescent europium complex is enough to significantly boost its luminescence. Our results, on the basis of photophysical measurements on 5 novel europium complexes and 15 known ones, point in the direction that ligand dissimilarity and ligand diversity are all concepts that clearly play a fundamental role in the luminescence of europium complexes. We show that it is important that a symmetry breaker ligand exists in the complex to enhance ligand dissimilarity and ligand diversity, all mainly affecting the nonradiative decay rate by reducing it. Because the presence of at least one antenna ligand is also obviously necessary, the optimal and the most cost-effective situation can be

SUBMITTER: Silva AIS 

PROVIDER: S-EPMC6644999 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature