College of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road 850#, Dalian 116029, PR China.
Talanta. 2019 Apr 1;195:345-353. doi: 10.1016/j.talanta.2018.11.068. Epub 2018 Nov 22.
In this paper, two nanoparticle fluorescence sensors L1 and L2 were designed and synthesized for the detection of 2,4,6-trinitrophenol (TNP) in water. Density functional theory (DFT) calculations were used to assist in designing sensors and explaining the detection mechanism. A further illustration of the fluorescence quenching mechanism was also studied by H NMR titration and UV-Vis absorption spectroscopy. The Job's plot demonstrates the combined stoichiometry of the sensor and TNP. Both sensors show low detection limit apparently (0.17 and 0.49 μM), fast and highly selective fluorescence response to TNP compared to other nitro-compounds. Moreover, L1 and L2 were successfully applied for the determination of TNP in real water samples.
本文设计并合成了两种纳米粒子荧光传感器 L1 和 L2，用于水中 2,4,6-三硝基苯酚（TNP）的检测。密度泛函理论（DFT）计算用于辅助传感器的设计和解释检测机制。通过 1H NMR 滴定和紫外-可见吸收光谱进一步研究了荧光猝灭机制。Job 图表明了传感器与 TNP 的结合计量比。与其他硝基化合物相比，两种传感器均表现出对 TNP 具有明显的低检测限（0.17 和 0.49 μM）、快速且高选择性的荧光响应。此外，L1 和 L2 成功应用于实际水样中 TNP 的测定。
