Document Type
Article
Publication Date
1-1-2005
Publication Title
The Journal of Physical Chemistry
Volume
109
First Page
3858
Last Page
3863
DOI
10.1021/jp0444666
Disciplines
Chemistry
Abstract
Absorption, emission, and excitation spectra for solid-state and solution of Tb(III), Dy(III), and Gd(III) complexes with the polypyridine ligand 6,6‘-bis[bis(2-pyridylmethyl)-aminomethyl]-2,2‘-bipyridine (C36H34N8) are presented. Measurements of excited-state lifetimes and quantum yields in various solvents at room temperature and 77 K are also reported and used to characterize the excited-state energetics of this system. Special attention is given to the characterization of metal-to-ligand energy transfer efficiency and mechanisms. The measurement of circularly polarized luminescence (CPL) from the solution of the Dy(III) complex following circularly polarized excitation confirms the chiral structure of the complexes under study. No CPL is present in the luminescence from the Eu(III) or Tb(III) complex because of efficient racemization. The variation of the magnitude of the CPL as a function of temperature from an aqueous solution of DyL is used for the first time to characterize the solution equilibria between different chiral species.
Recommended Citation
Gilles Muller, P. Gawryszewska, J. Sokolnicki, A. Dossing, J. P. Riehl, and J. Legendziewicz. "Characterization of the Electronic Excited-State Energetics and Solution Structure of Lanthanide(III) Complexes with the Polypyridine Ligand 6,6'-Bis[bis(2-pyridylmethyl)aminomethyl]-2,2'-bipyridine" The Journal of Physical Chemistry (2005): 3858-3863. https://doi.org/10.1021/jp0444666
Comments
Copyright © 2005 American Chemical Society. The definitive version is available online at http://dx.doi.org/10.1021/jp0444666.