基于 9,9'-联蒽的新型硫代缩氨基脲荧光探针用于 Hg 和 Ag 的检测。
A new thiosemicarbazone fluorescent probe based on 9,9'-bianthracene for Hg and Ag.
机构信息
School of Chemistry and Chemical Engineering, Qianbei Featured Resources Applied Research Key Laboratory, Zunyi Normal College, Zunyi 563006, China.
School of Chemistry and Chemical Engineering, Qianbei Featured Resources Applied Research Key Laboratory, Zunyi Normal College, Zunyi 563006, China.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2019 May 15;215:34-40. doi: 10.1016/j.saa.2019.02.036. Epub 2019 Feb 18.
A new 9,9'-bianthracene-based thiosemicarbazone (D1) has been successfully synthesized and utilized for chemosensors. The properties of D1 were systematically investigated by UV-Vis, fluorescence titration and theoretical calculations. As a result, D1 exhibits a characteristic fluorescence quenching phenomenon in the presence of Hg or Ag compared to other metal cations (Na, K, Mg, Ba, Al, Zn, Fe, Pb, Cu, Co, Cd, Ni and Mn). The detection limits of Hg and Ag reach 6.62×10M and 1.99×10M, respectively. This is mainly attributed to the Hg (or Ag) forms a stable five-membered ring with the N atom in Schiff base CN and the S atom in thiourea. The results suggest that the probe D1 is a promising candidate for chemosensors in aqueous media due to its highly selectivity for Hg and Ag.
一种基于 9,9'-联蒽的新型硫代缩氨基脲（D1）已成功合成，并被用于化学传感器。通过紫外-可见光谱、荧光滴定和理论计算系统地研究了 D1 的性质。结果表明，与其他金属阳离子（Na、K、Mg、Ba、Al、Zn、Fe、Pb、Cu、Co、Cd、Ni 和 Mn）相比，D1 在存在 Hg 或 Ag 时表现出特征荧光猝灭现象。Hg 和 Ag 的检测限分别达到 6.62×10^-7M 和 1.99×10^-6M。这主要归因于 Hg（或 Ag）与席夫碱 CN 中的 N 原子和硫脲中的 S 原子形成稳定的五元环。结果表明，由于探针 D1 对 Hg 和 Ag 具有高度选择性，因此它是水相化学传感器的有前途的候选物。
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