10.1021/acs.inorgchem.5b01927.s004
Lena J. Daumann
Lena J.
Daumann
David S. Tatum
David S.
Tatum
Christopher M. Andolina
Christopher M.
Andolina
Joseph I. Pacold
Joseph I.
Pacold
Anthony D’Aléo
Anthony
D’Aléo
Ga-lai Law
Ga-lai
Law
Jide Xu
Jide
Xu
Kenneth N. Raymond
Kenneth N.
Raymond
Effects of Ligand Geometry on the Photophysical Properties of Photoluminescent Eu(III) and Sm(III) 1‑Hydroxypyridin-2-one Complexes in Aqueous Solution
American Chemical Society
2016
2 LI
Aqueous SolutionA series
ligand
aliphatic linker length
5 LI complexes
bimodal Φ tot trends
XRD
5 LI bridged complexes
Sm
nLI
8 methylene units
photoluminescent
DFT
HOPO
pattern
Eu
2016-01-04 00:00:00
Dataset
https://acs.figshare.com/articles/dataset/Effects_of_Ligand_Geometry_on_the_Photophysical_Properties_of_Photoluminescent_Eu_III_and_Sm_III_1_Hydroxypyridin_2_one_Complexes_in_Aqueous_Solution/2092324
A series of 10 tetradentate 1-hydroxy-pyridin-2-one
(1,2-HOPO)
ligands and corresponding eight-coordinated photoluminescent Eu(III)
and Sm(III) complexes were prepared. Generally, the ligands differ
by the linear (nLI) aliphatic linker length, from 2 to 8 methylene
units between the bidentate 1,2-HOPO chelator units. The photoluminescent
quantum yields (Φ<sub>tot</sub>) were found to vary with the
linker length, and the same trend was observed for the Eu(III) and
Sm(III) complexes. The 2LI and 5LI bridged complexes are the brightest (Φ<sub>tot</sub>xε).
The change in ligand wrapping pattern between 2LI and 5LI complexes
observed by X-ray diffraction (XRD) is further supported by density
functional theory (DFT) calculations. The bimodal Φ<sub>tot</sub> trends of the Eu(III) and Sm(III) complexes are rationalized by
the change in ligand wrapping pattern as the bridge (<i>n</i>LI) is increased in length.