Chiroptical spectra of a series of tetrakis((+)-3-heptafluorobutylyrylcamphorato)lanthanide(III) with an encapsulated alkali metal ion: circularly polarized luminescence and absolute chiral structures for the Eu(III) and Sm(III) complexes.
Chiroptical spectra of a series of tetrakis((+)-3-heptafluorobutylyrylcamphorato)lanthanide(III) with an encapsulated alkali metal ion: circularly polarized luminescence and absolute chiral structures for the Eu(III) and Sm(III) complexes.
复制标题
一系列四局（（+） - 3-氟丙二氟丙烯酸酯）灯笼（III）具有封装的碱金属离子：EU（III）和SM（III）和SM（III）配合物的圆形极化发光和绝对手性的结构。
DOI：
10.1021/ic201851r
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发表时间：
2011-12-19
影响因子：
4.6
通讯作者：
Muller G
中科院分区：
文献类型：
--
作者：
Lunkley JL;Shirotani D;Yamanari K;Kaizaki S;Muller G
当碱金属离子和溶剂被操纵时，MI[Eu(+)-Hfbc)4]的发光和圆偏振发光表现出与激子Cd相似的排列内和π-π*跃迁行为。与轴对称DOTA型化合物不同，碱金属离子的溶剂化程度不同，而Eu(III)离子的溶剂化程度不同。在4f-4f跃迁中显著的CPL提供了更多关于手性Eu(III)配合物立体专一性形成的信息，因为CPL光谱仅限于发光物种，并且选择性地反映了La(III)周围局部结构环境的螺旋性。与之相比，激子CD揭示了四种叶型络合物螺旋排列的手性结构信息。特别重要的是，对含稀土(III)化合物(即Eu和Sm)在溶液中迄今最高CPL活性的观测支持了稀土(III)在激发态和基态的手性对应，这是由激子Cd产生的。
The luminescence and circularly polarized luminescence (CPL) spectra of MI[Eu((+)–hfbc)4] show a similar behavior to the exciton CD in the intraligand π–π* transitions when the alkali metal ions and solvents are manipulated. There is a difference in susceptibility in solvation toward the alkali metal ions but not toward the Eu(III) ion, as in the case of axially symmetric DOTA–type compounds. The remarkable CPL in the 4f–4f transitions provide much more information on stereospecific formation of chiral Eu(III) complexes, since CPL spectroscopy is limited to luminescent species and reflects selectively toward helicity of the local structural environment around the lanthanide(III). While in comparison, exciton CD reveals the chiral structural information from the helical arrangement of the four bladed chelates. Of special importance, the observation of the highest CPL activities measured to date for lanthanide(III)–containing compounds (i.e. Eu and Sm) in solution supports that the chirality of Lanthanide(III) in the excited state corresponds to that in the ground state, which was derived from the exciton CD.
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影响因子：
4.6
作者：
Lisowski, Jerzy
通讯作者：
Lisowski, Jerzy
影响因子：
2.9
作者：
Le Guennic, B;Hieringer, W;Autschbach, J
通讯作者：
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影响因子：
4.6
作者：
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通讯作者：
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影响因子：
2
作者：
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通讯作者：
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影响因子：
4.9
作者：
Dickins, RS;Howard, JAK;Siligardi, G
通讯作者：
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