New insights into structure and luminescence of Eu(III) and Sm(III) complexes of the 3,4,3-LI(1,2-HOPO) ligand.
New insights into structure and luminescence of Eu(III) and Sm(III) complexes of the 3,4,3-LI(1,2-HOPO) ligand.
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DOI：
10.1021/ja5116524
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发表时间：
2015-03-04
影响因子：
15
通讯作者：
Raymond, Kenneth N.
中科院分区：
文献类型：
--
作者：
Daumann, Lena J.;Tatum, David S.;Snyder, Benjamin E. R.;Ni, Chengbao;Law, Ga-lai;Solomon, Edward I.;Raymond, Kenneth N.
We report the preparation and new insight into photophysical properties of luminescent hydroxypyridonate complexes [MIIIL]− (M = Eu or Sm) of the versatile 3,4,3-LI(1,2-HOPO) ligand (L). We report the crystal structure of this ligand with EuIII as well as insights into the coordination behavior and geometry in solution by using magnetic circular dichroism. In addition TD-DFT calculations were used to examine the excited states of the two different chromophores present in the 3,4,3-LI(1,2-HOPO) ligand. We find that the EuIII and SmIII complexes of this ligand undergo a transformation after in situ preparation to yield complexes with higher quantum yield (QY) over time. It is proposed that the lower QY in the in situ complexes is not only due to water quenching but could also be due to a lower degree of f-orbital overlap (in a kinetic isomer) as indicated by magnetic circular dichroism measurements.
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影响因子：
3.3
作者：
Werts, MHV;Jukes, RTF;Verhoeven, JW
通讯作者：
Verhoeven, JW
影响因子：
4.4
作者：
GORLLERWALRAND, C;DEMOITIENEYT, N;BUNZLI, JC
通讯作者：
BUNZLI, JC
影响因子：
1.8
作者：
Sturzbecher-Hoehne, M.;Deblonde, G. J. -P.;Abergel, R. J.
通讯作者：
Abergel, R. J.
影响因子：
4.3
作者：
Sturzbecher-Hoehne, Manuel;Kullgren, Birgitta;Abergel, Rebecca J.
通讯作者：
Abergel, Rebecca J.
影响因子：
4.6
作者：
Abergel, Rebecca J.;D'Aleo, Anthony;Leung, Clara Ng Pak;Shuh, David K.;Raymond, Kenneth N.
通讯作者：
Raymond, Kenneth N.