Abstract

Complexes {(NMe₂H₂)[Ln(TDA)(HCOO)] ∙ 0.5H₂O)} are prepared by the solvothermal synthesis in a water–dimethylformamide (1 : 1) system from a mixture of 1,2,3-triazole-4,5-dicarboxylic acid (H₃TDA), NaOH, and Ln(NO₃)₃ (Ln = Eu, Gd). The crystal structure of the europium complex is determined by X-ray structure analysis (CIF file CCDC no. 1939689). This compound is shown to be the ionic metal-organic framework, where the cavities in the anionic structure of [Eu(TDA)(HCOO)]^– are partially occupied by the dimethylammonium cations and water molecules. The study of the luminescence spectra of the gadolinium derivative gives the energy of the triplet level of the H₃TDA ligand (~25 300 cm^–1), the value of which makes it possible to efficiently sensitize the luminescence of rare-earth metal ions, in particular, Eu³⁺. The decay kinetics and the emission and excitation spectra of the heterometallic derivatives {(NMe₂H₂)[Gd_1 – xEu_x(TDA)(HCOO)] ∙ 0.5H₂O)} are studied. The dilution of europium with gadolinium results in a substantial decrease in the concentration quenching of the europium luminescence and an increase in the observed lifetimes of the excited state of Eu³⁺.

中文翻译：

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新型杂配Euro和Format甲酸三唑二羧酸酯：合成，结构和发光性质。

摘要

配合物{（NMe ₂ H ₂）[Ln（TDA）（HCOO）]∙0.5H ₂ O）}是由溶剂热合成在1,2-甲基二甲酰胺（1：1）体系中通过溶剂热合成制得的-三唑-4,5-二羧酸（H ₃ TDA），NaOH和Ln（NO ₃）₃（Ln = Eu，Gd）。X络合物的晶体结构通过X射线结构分析（CIF文件CCDC号1939689）确定。该化合物显示出是离子金属-有机骨架，其中的阴离子结构空腔[铕（TDA）（HCOO）] ^-部分地由二甲基铵阳离子和水分子占据。the衍生物的发光光谱的研究给出了H的三重态能级₃ TDA配体（〜25 300 cm ^–1），其值使得可以有效地敏化稀土金属离子（特别是Eu ^3+）的发光。研究了杂金属衍生物{（NMe ₂ H ₂）[Gd _{1 –  x} Eu _x（TDA）（HCOO）]∙0.5H ₂ O）}的衰变动力学以及发射和激发光谱。g用g稀释导致results发光的浓度猝灭显着降低，并观察到Eu ³⁺激发态的寿命增加。