A novel samarium complex {[Sm(IA)₃(H₃O)₂]_2n}(2nHgCl₄)(nHg₂Cl₅)·nH₃O·3nH₂O (1) (HIA = isonicotinc acid) has been synthesized under solvothermal condition and structurally characterized by single-crystal X-ray diffraction. It possesses a one-dimensional (1-D) chain-like structure. Solid-state photoluminescence measurement shows that it displays red light emission bands. The emission bands result from the characteristic emissions of the 4f electrons intrashell transitions of ⁴G_5/2 → ⁶H_J (J = 5/2, 7/2, 9/2 and 11/2) of the samarium(III) ions. Energy transfer mechanism is explained by the energy level diagram of the samarium(III) ion and isonicotinic acid ligand. Complex 1 has a remarkable CIE chromaticity coordinate of (0.6182, 0.3813); so, it is a potential candidate for red light emitting materials for light emitting diodes (LEDs). Solid-state UV/Vis diffuse reflectance spectrum reveals that complex 1 has a wide optical band gap of 3.23 eV.

新型sa络合物{[Sm（IA）₃（H ₃ O）₂ ] _{2 n} }（2 n HgCl ₄）（n Hg ₂ Cl ₅）· n H ₃ O·3 n H ₂ O（1）（HIA =异烟酸）是在溶剂热条件下合成的，并通过单晶X射线衍射对其结构进行了表征。它具有一维（1-D）链状结构。固态光致发光测量表明它显示红色发光带。发射带是由4 f的特征发射产生的电子shell离子的壳内跃迁为⁴ G _5/2  →  ⁶ H _J（J = 5 / 2、7 / 2、9 / 2和11/2）。sa（III）离子和异烟酸配体的能级图解释了能量转移的机理。配合物1具有显着的CIE色度坐标（0.6182，0.3813）; 因此，它是用于发光二极管（LED）的红色发光材料的潜在候选者。固态UV / Vis漫反射光谱表明，配合物1具有3.23 eV的宽光学带隙。