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首页> 外文期刊>Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy >Photophysical properties of novel lanthanide (Tb3+, Dy3+, Eu3+) complexes with long chain para-carboxyphenol ester p-L-benzoate (L = dodecanoyloxy, myristoyloxy, palmitoyloxy and stearoyloxy)
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Photophysical properties of novel lanthanide (Tb3+, Dy3+, Eu3+) complexes with long chain para-carboxyphenol ester p-L-benzoate (L = dodecanoyloxy, myristoyloxy, palmitoyloxy and stearoyloxy)

机译：新型镧系元素（Tb3 +，Dy3 +，Eu3 +）与长链对羧基苯酚酯对-L-苯甲酸酯（L =十二烷酰氧基，肉豆蔻酰氧基，棕榈酰氧基和硬脂酰氧基）的光物理性质

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摘要

In this paper, a series of 12 binary luminescent lanthanide coordination compounds with long chain p-carboxyphenol ester were assembled. Both elemental analysis and infrared spectroscopy allowed to determine the complexes formula: LnL(3), where Ln=Tb, Dy, Eu; L=pdodecanoyloxybenzoate (14-OBA), p-myristoyloxybenzoate (14-OBA),p-palmitoyloxybenzoate (16-OBA) and p-stearoyloxybenzoate (8-OBA), respectively. The photophysical properties of these complexes were studied in detail with various of spectroscopies such as ultraviolet-visible absorption spectra, low temperature phosphorescence spectra and fluorescent spectra. The ultraviolet-visible absorption spectra showed that some bands shift with the different chain length of p-carboxyphenol ester. From the low temperature phosphorescent emission, the triplet state energies for these four ligands were determined to be around 24,242 cm(-1) (12-OBA), 24,612 cm(-1) (14-OBA), 24,084 cm(-1) (16-OBA) and 24,125 cm(-1) (18-OBA), respectively, suggesting they are suitable for the sensitization of the above lanthanide ions, especially for Tb3+ and Dy3+. The fluorescence excitation and emission spectra for these lanthanide complexes of the four ligands take agreement with the above predict from energy match. (c) 2006 Elsevier B.V. All rights reserved.
机译：本文组装了一系列具有长链对羧基苯酚酯的12种二元发光镧系配位化合物。元素分析和红外光谱都可以确定配合物分子式：LnL（3），其中Ln = Tb，Dy，Eu; L分别为对十二烷酰氧基苯甲酸酯（14-OBA），对肉豆蔻酰氧基苯甲酸酯（14-OBA），对棕榈酰氧基苯甲酸酯（16-OBA）和对硬脂酰氧基苯甲酸酯（8-OBA）。通过各种光谱学，如紫外可见吸收光谱，低温磷光光谱和荧光光谱，详细研究了这些配合物的光物理性质。紫外-可见吸收光谱表明，随着对羧基苯酚酯链长的变化，一些谱带发生位移。从低温磷光发射，这四个配体的三重态能量确定为大约24,242 cm（-1）（12-OBA），24,612 cm（-1）（14-OBA），24,084 cm（-1） （16-OBA）和24,125 cm（-1）（18-OBA），表明它们适用于上述镧系元素离子的敏化，尤其是Tb3 +和Dy3 +。四个配体的镧系元素配合物的荧光激发和发射光谱与上述从能量匹配的预测一致。 （c）2006 Elsevier B.V.保留所有权利。

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