首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Substitutional Photoluminescence Modulation in Adducts of a Europium Chelate with a Range of Alkali Metal Cations: A Gas-Phase Study
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Substitutional Photoluminescence Modulation in Adducts of a Europium Chelate with a Range of Alkali Metal Cations: A Gas-Phase Study

机译:一系列碱金属阳离子的Che螯合物加合物中的取代光致发光调制:气相研究

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摘要

We present gas-phase dispersed photoluminescence spectra of europium-(III) 9-hydroxyphenalen-1-one (HPLN) complexes forming adducts with alkali metal ions([Eu(PLN)_3M]~+ with M = Li, Na, K, Rb, and Cs) confined in a quadrupole ion trap for study. The mass selected alkali metal cation adducts display a split hypersensitive ~5D_0 → ~7F~2 Eu~(3+) emission band. One of the two emission components shows a linear dependence on the radius of the alkali metal cation whereas the other component displays a quadratic dependence thereon. In addition, the relative intensities of both components invert in the same order. The experimental results are interpreted with the support of density functional calculations and Judd?Ofelt theory, yielding also structural information on the isolated [Eu(PLN)_3M]~+ chromophores.
机译:我们提出了-(III)9-羟基苯并-1-酮(HPLN)配合物与碱金属离子([Eu(PLN)_3M]〜+的加成,其中M = Li,Na,K, Rb和Cs)限制在四极离子阱中进行研究。大量选择的碱金属阳离子加合物显示出分裂的〜5D_0→〜7F〜2 Eu〜(3+)发射带。两种发射成分之一显示出对碱金属阳离子半径的线性依赖性,而另一种成分显示出对碱金属阳离子半径的二次依赖性。另外,两个分量的相对强度以相同顺序反转。实验结果在密度泛函计算和Judd?Ofelt理论的支持下得到了解释,还产生了有关分离的[Eu(PLN)_3M]〜+发色团的结构信息。

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