[Cd(对硝基苯甲酸)_2(乙二胺)H_2O]配合物的结构及荧光性能

[Cd(p-nitrobenzoic acid)_2 (en) H_2O]coordination compound in structure and fluorescent property

以氯化镉、对硝基苯甲酸和乙二胺(en)为原料,成功合成了具有荧光性能的[Cd(对硝基苯甲酸)_2(乙二胺) H_2O]配合物1,并对其结构进行解析。首先,采用水热合成法进行配合物1的合成。接着,利用单晶X射线衍射测定配合物1的结构。然后,采用元素分析法、红外光谱法(IR)、热重分析法(TGA)和粉末X射线衍射法(PXRD)对其进行表征。最后,在室温条件下,对配合物1进行荧光性能测试。实验结果表明:配合物1通过N-H幆O、O-H幆O和C-H幆O氢键将离散结构连接形成三维超分子构型。配合物1在266 nm处激发,在377 nm和444 nm处出现两个发射峰,表现出较强的荧光性能。上述结果说明,配合物1的荧光性能主要来自于配体到配体的跃迁,可以作为具有发展潜能的荧光光学材料。

In this paper,a new coordination polymer of[Cd(p-nitrobenzoic acid)2(en)H2O](1)was synthesized,based on CdCl2,p-nitrobenzoic acid and ethylenediamine(en),and its structure was analyzed.First,a compound(compound 1)was hydrothermally synthesized.Second,compound 1 was structurally measured using single-crystal X-ray diffraction.Then,compound 1 was structurally characterized using infrared spectrometry(IR),elemental analysis,power X-ray diffraction(PXRD)and thermogravimetric analysis(TGA).Finally,the fluorescence property of compound 1 was measured at room temperature.Experimentalresults indicate that compound 1 was linked into a three-dimensional(3D)supramolecular structure by N-H…O、O-H…O and C-H…O hydrogen bonds.Compound 1 demonstrated fluorescent properties.Its peak of excitation was 266 nm and its peaks of emission were 377 nm and 444 nm.The fluorescent properties of compound 1 mainly come from the transition from the ligand to ligand.Compound 1 may be a fluorescent material with potential for further development.