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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Synthesis, structure and near-infrared photoluminescence of hexanitratoneodymate ionic liquids
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Synthesis, structure and near-infrared photoluminescence of hexanitratoneodymate ionic liquids

机译：己内酯酸盐离子液体的合成，结构和近红外光致发光

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Five hexanitratoneodymate-based rare earth complexes (1-5) were synthesized using a straightforward method. Purple plate crystals of 1 were isolated and the crystal structure was determined by single-crystal X-ray diffraction with respect to the coordination mode of the nitrate anion to the central Nd(III) ion. (1: monoclinic system P2(1)/c, a = 15.9460(3) angstrom, b = 10.2457(6) angstrom, c = 33.323(3) angstrom, beta = 91.8108(17)degrees, V = 3109.11(11) angstrom(3), Z = 4). The central Nd(III) ion is surrounded by six bidentate nitrate ligands, with a major trend towards high symmetry of the [Nd(NO3)(6)](3-) anion as an icosahedron. Thermal properties were determined from differential scanning calorimetry (DSC) combined with thermogravimetric analysis (TGA) tests. Complexes 3-5 are found to be room temperature liquids, and their excitation and emission spectra were recorded. These complexes exhibit intense near-infrared (NIR) luminescence emission, which originates from interconfigurational f-f transitions F-4(3/2) -> I-4(J) multiplet (J = 9/2-13/2). These liquid Nd(III) complexes are of interest as potential NIR luminescent soft materials with high thermal stability.
机译：使用一种简单的方法合成了五种基于六氨基磺酸的稀土配合物（1-5）。分离出1的紫色板状晶体，并通过单晶X射线衍射确定硝酸根阴离子与中心Nd（III）离子的配位模式。 （1：单斜系统P2（1）/ c，a = 15.9460（3）埃，b = 10.2457（6）埃，c = 33.323（3）埃，beta = 91.8108（17）度，V = 3109.11（11）埃（3），Z = 4）。中心的Nd（III）离子被6个二齿硝酸盐配体包围，[Nd（NO3）（6）]（3-）阴离子呈二十面体的高度对称是一个主要趋势。通过差示扫描量热法（DSC）结合热重分析（TGA）测试确定热性能。发现配合物3-5为室温液体，并记录了它们的激发和发射光谱。这些复合物表现出强烈的近红外（NIR）发光发射，其发射来自互构f-f跃迁F-4（3/2）-> I-4（J）多重峰（J = 9 / 2-13 / 2）。这些液态Nd（III）配合物作为具有高热稳定性的潜在NIR发光软材料受到关注。

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