Meng Yanheng, Cheng Yuebo, Yang Xiaoping, Lv Xiaoli, Huang Xianfeng, Schipper Desmond
College of Chemistry and Materials Engineering, College of Life and Environmental Science, Zhejiang Key Laboratory of Carbon Materials, Wenzhou University, Wenzhou 325035, China.
College of Chemistry and Materials Engineering, College of Life and Environmental Science, Zhejiang Key Laboratory of Carbon Materials, Wenzhou University, Wenzhou 325035, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2024 Oct 5;318:124468. doi: 10.1016/j.saa.2024.124468. Epub 2024 May 16.
Rapid and quantitative detection of 2,4,6-trinitrophenol (TNP) is very crucial for homeland security, military application, and environment protection. Herein, a nine-metal Zn(II)-Nd(III) nanoring 1 with a diameter of 2.3 nm was constructed by the use of a long-chain Schiff base ligand, which shows ratiometric fluorescence response to TNP with high selectivity and sensitivity. The fluorescence sensing behavior of 1 to TNP is expressed by a first-order equation I/I = -0.0128*[TNP] + 0.9723, which can be used to quantitatively analyze TNP concentrations in solution. The limits of detection (LODs) to TNP based on the ligand-centered (LC) and Nd(III) emissions of 1 are 5.93 μM and 3.18 μM, respectively. The fluorescence response mechanism to TNP is attributed to the competitive absorption effect and photoinduced electron transfer (PET). The luminescence quenching of 1 is dominated by static process.
快速定量检测2,4,6-三硝基苯酚（TNP）对于国土安全、军事应用和环境保护至关重要。在此，通过使用长链席夫碱配体构建了一种直径为2.3 nm的九金属Zn(II)-Nd(III)纳米环1，其对TNP表现出具有高选择性和灵敏度的比率荧光响应。1对TNP的荧光传感行为由一阶方程I/I = -0.0128*[TNP] + 0.9723表示，该方程可用于定量分析溶液中的TNP浓度。基于1的配体中心（LC）和Nd(III)发射对TNP的检测限（LOD）分别为5.93 μM和3.18 μM。对TNP的荧光响应机制归因于竞争吸收效应和光致电子转移（PET）。1的发光猝灭以静态过程为主。
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