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在乙醇-水溶液中,水浴60℃合成了一系列不同配比的稀土掺杂(Nd/Dy)-L-谷氨酸(L-Glu)-邻菲啰啉(Phen)三元固体配合物。利用元素分析、摩尔电导、紫外光谱、红外光谱、热重差热分析等表征,推测出配合物组成为[Nd_xDy_(1-x)(L-Glu)_3Phen]Cl_3·nH_2O。通过荧光光谱对配合物的发光特性进行了探讨,当Nd和Dy掺杂比达到1∶3时,配合物荧光强度最大。最后通过循环伏安法对配合物的电化学活性进行了研究,设定扫描电位-0.30~-0.80V(vs.SCE),五种配合物在HAc-NaAc缓冲溶液(pH约6.0左右)中均表现出电化学活性,电化学活性中心是RE3+,电化学行为是准可逆的,配合物还原峰电流与扫描速度及浓度呈现出递增关系。
A series of rare earth doped (Nd / Dy) -L-glutamic acid (L-Glu) -phen phenolic ternary complexes were synthesized in ethanol-water solution at 60 ℃. The composition of [Nd_xDy_ (1-x) (L-Glu) _3Phen] Cl_3 · nH_2O was estimated by elemental analysis, molar conductivity, ultraviolet spectrum, infrared spectrum and TG-DTA. The luminescent properties of the complexes were investigated by fluorescence spectroscopy. When Nd and Dy doping ratio reached 1: 3, the fluorescence intensity of the complexes was the highest. Finally, the electrochemical activity of the complexes was studied by cyclic voltammetry. The scanning potentials were set at -0.30 ~ -0.80V (vs.SCE). The five complexes were incubated in HAc-NaAc buffer solution (pH about 6.0) All showed electrochemical activity. The electrochemically active center was RE3 + and the electrochemical behavior was quasi-reversible. The peak current of the complex showed an increasing relationship with the scanning speed and concentration.