Department of Chemistry, Nanchang University, Nanchang 330031, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2012 Oct;96:1005-11. doi: 10.1016/j.saa.2012.08.001. Epub 2012 Aug 16.
The paper describes a study on the fluorescence of a Eu-doped Mg-Al layered double hydroxide (Eu-doped LDH) response to glutamic acid (Glu). Various characterizations (UV-Vis transmittance, TG-DTA and IR-spectrum) indicated that there is an interaction between the Eu-doped LDH and Glu. Fluorescent study was found that the red emissions resulted from (5)D(0)-(7)F(J) transition (J=1, 2) of Eu(3+) markedly decreased, while the blue emission at 440 nm contributed to Glu shifted to low energy after the addition of Glu to the Eu-doped LDH. The fluorescent changes may be relevant to the hydrogen-bond interaction between the Eu-doped LDH and Glu, and the mechanism of the interaction between Eu-doped LDH and Glu was discussed.
本文描述了一种研究 Eu 掺杂的 Mg-Al 层状双氢氧化物（Eu 掺杂 LDH）对谷氨酸（Glu）的荧光响应的研究。各种表征（UV-Vis 透射率、TG-DTA 和 IR 光谱）表明，Eu 掺杂 LDH 与 Glu 之间存在相互作用。荧光研究发现，Eu(3+)的（5）D(0)-(7)F(J)跃迁（J=1,2）的红色发射明显减弱，而加入 Glu 后，Eu 掺杂 LDH 中 440nm 的蓝色发射向低能移动。荧光变化可能与 Eu 掺杂 LDH 与 Glu 之间的氢键相互作用有关，并讨论了 Eu 掺杂 LDH 与 Glu 之间相互作用的机制。
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