In industry, over usage of Cu²⁺ and Al³⁺ will lead to toxic wastewater, which further to give serious pollution for the environment. On the other hand, L-lysine can enhance serotonin release in the amygdala, with subsequent changes in psychobehavioral responses to stress. Therefore it is the urgent problem to design a method for detecting the amount of Cu²⁺, Al³⁺, and L-lysine. In this work, through the solvothermal synthesis method, two new coordination complexes based on the new bifunctional building block 4'-(1H-1,2,4-triazole-1-yl)- [1,1'-biphenyl]-4-carboxylic acid (HL) have been synthesized, namely, [Zn(L)₂·4H₂O] (complex 1) and [Cd(L)₂·4H₂O] (complex 2). X-ray single-crystal diffractometer was used to analyze its structure, powder X-ray diffraction (PXRD) patterns confirmed that 1 and 2 powder’s purity and 1 can keep stable during the detection process of Cu²⁺, Al³⁺, and L-lysine, respectively. Elemental analysis, thermogravimetric analysis, infrared analysis, ultraviolet analysis and fluorescent spectrum have been used to characterize these complexes. The photo-luminescent test showed that 1 can accurately recognize Al³⁺ and Cu²⁺ among various cations. On the other hand, 1 can distinguish L-lysine among amino acid molecules. Therefore, 1 can be utilized as a multifunctional fluorescent probe for Al³⁺(K_sv = 1.5570×10⁴ [M]⁻¹), Cu²⁺(K_sv = 1.4948×10⁴ [M]⁻¹) and L-lysine (K_sv = 4.9118×10⁴ [M]⁻¹) with low detection limits (17.5 μM, 18.2 μM, 5.6 μM) respectively.

在工业上，Cu ²⁺和Al ^3+的过量使用会产生有毒废水，进一步给环境造成严重污染。另一方面，L-赖氨酸可增强杏仁核中5-羟色胺的释放，并随之改变心理行为对压力的反应。因此，设计一种检测Cu 2 ⁺，Al ³⁺和L-赖氨酸含量的方法是当务之急。在这项工作中，通过溶剂热合成方法，基于新的双功能结构单元4'-（1H-1,2,4-三唑-1-基）-[1,1'-联苯] -4的两个新的配位化合物-羧酸（HL），即[Zn（L）₂ ·4H ₂ O]（配合物1）和[Cd（L）₂·4H ₂ O]（络合物2）。用X射线单晶衍射仪分析了其结构，粉末X射线衍射图（PXRD）证实了1和2粉末的纯度和1在Cu 2 ⁺，Al ³⁺和L的检测过程中保持稳定。-赖氨酸。元素分析，热重分析，红外分析，紫外分析和荧光光谱已用于表征这些配合物。光致发光测试表明1可以准确识别各种阳离子中的Al ³⁺和Cu ²⁺。另一方面，1可以区分氨基酸分子之间的L-赖氨酸。因此，可以将1用作Al ³⁺（K _sv = 1.5570×10 ⁴ [M] ^-1），Cu ²⁺（K _sv = 1.4948×10 ⁴ [M] ^-1）和L-的多功能荧光探针。赖氨酸（K _sv = 4.9118×10 ⁴ [M] ^-1）分别具有低检测限（17.5μM，18.2μM，5.6μM ）。