2D lanthanide-based pyridine-substituted triazole benzoate coordination polymers: Structure, optical and magnetic properties

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• 作者：Linyan Yang ; Wen Gu ; Jinlei Tian ; Shengyun Liao ; Liangliang Xin ; Ming Zhang ; Xiaohua Wei ; Peiyao Du ; Lili Shen ; Xin Liu
• 关键词：Lanthanide-based ; Coordination polymers ; Luminescent ; Magnetism
• 刊名：Inorganic Chemistry Communications
• 出版年：September, 2013
• 年：2013
• 卷：35
• 期：Complete
• 页码：195-199
• 全文大小：920 K

文摘

A series of novel lanthanide-based coordination polymers, [Ln(L)(atpa)(H₂O)₂]_n路1.5nH₂O (HL = 4-[3-methyl-5-(pyridin-4-yl)-1,2,4-triazol-4-yl]benzoic acid, H₂atpa = 2-aminoterephthalic acid and Ln = Tb(1), Dy(2), Ho(3), Er(4), Tm(5), Yb(6)) have been hydrothermally synthesized and characterized by single-crystal X-ray diffraction, optical and magnetic measurements. Compounds 1-6 are isomorphous, which can be described as a 2D network based on Ln₂(CO₂)₂ units. The magnetic properties of compound 1 (Tb) show typical antiferromagnetic interaction, while compound 2 (Dy) has ferromagnetic behavior. The room-temperature photoluminescence spectra of 1 exhibit strong characteristic emissions in the visible region, whereas compounds of Dy(2), Er(4) and Yb(6) display NIR luminescence upon irradiation at the ligand band.