| 二乙酰对甲苯酒石酸构筑的三个镧系配合物的合成、结构、荧光及光催化性质 |
| Synthesis, Structures, Luminescence and Photocatalytic Properties of Three Lanthanide Complexes Based on Ditoluoyl-Tartrate |
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| 摘要: 合成并通过红外光谱、元素分析、单晶及粉末衍射表征了3个一维配合物[Ln（HDTTA）3（CH3OH）3]n（Ln=Ce（1），Pr（2），Sm（3））的结构（D-H2DTTA为（+）-二（对甲苯酰）-D-酒石酸）。单晶衍射结果表明，3个配合物同构，结晶于三方晶系手性空间群R3，在c方向呈现一维链状结构。荧光光谱表明由于D-H2DTTA配体的激发态能级与Pr3+和Sm3+离子激发态能级接近，所以可以敏化2种离子的f电子在609 nm处的发光。此外，配合物1在紫外光照射下表现出良好的光催化降解染料亚甲基蓝的性质，在无外加试剂条件下160 min内降解率可达76%。 |
| 关键词: 镧配合物 二(对甲苯)酰酒石酸 晶体结构 荧光 光催化 |
| 基金项目: 国家自然科学基金（No.21671124）、山西省1331工程重点创新研究团队和山西省自然科学基金（No.201701D121039）资助。 |
| Abstract: Three one-dimensional (1D) lanthanide complexes[Ln(HDTTA)3(CH3OH)3]n (Ln=Ce (1), Pr (2), Sm (3)) (D-H2DTTA=(+)-di(p-toluoyl)-D-tartaric acid) were synthesized at room temperature and normal pressure. They were fully structurally characterized by IR, elemental analysis, single-crystal and powder X-ray diffraction. The structure analysis shows that complexes 1~3 are isomorphic. They belong to chiral R3 space group of trigonal system and display infinite 1D chains structure along c axis. Photoluminescence measurements indicated that D-H2DTTA ligand can partly sensitize the f-f transition luminescence of Pr3+ and Sm3+ cations but Ce3+ at 609 nm, which is attributed to the mismatching between the excited state energy levels of metal cations and ligands. Additionally, Complex 1 exhibited photocatalytic property for the degradation of methylene blue under UV light irradiation in the solution. The photocatalytic performance was up to 76% within 160 min without any other reagents. |
| Keywords: Ln3+ complexes di(p-toluoyl) tartaric acid crystal structure luminescence photocatalysis |
| 投稿时间：2020-07-24 修订日期：2020-10-28 |
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| 高晓丽,韩美荣,任慧芳,冯思思.二乙酰对甲苯酒石酸构筑的三个镧系配合物的合成、结构、荧光及光催化性质[J].无机化学学报,2021,37(2):375-384. |
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