一种基于咪唑并[1,2-a]吡啶的荧光探针，用于对铁和氟进行连续的“关-开-关”检测。
An Imidazo[1, 2-a]Pyridine Based Fluorescent Probe for the Continuous "on-off-on" Detection of Fe and F.
作者信息
Xue Lei, Yao Yelin, Wang Xin, Yin Jichen, Wang Haibin
机构信息
College of Chemistry and Chemical Engineering, Ningxia Normal University, Xueyuan road, Guyuan, 756000, Ningxia, P. R. China.
Pharmaron Beijing Co., Ltd, Beijing, 102600, P. R. China.
出版信息
J Fluoresc. 2024 May 16. doi: 10.1007/s10895-024-03763-0.
An "on-off-on" fluorescent probe LK was synthesized from 2-benzoylpyridine and o-vanillin, which could sequentially detect Fe and F in DMSO/HO solutions (v/v = 1/1, HEPES buffer, 1.0 mM, pH 7.0) with large Stokes shift (178 nm). LK exhibited not only high selectivity and sensitivity towards Fe and F, but also strong anti-interference ability to other ions. LK was coordinated with Fe at a ratio of 2:1, with a binding constant (K) of 1.3 × 10 M. The detection limits for Fe and F were 6.9 × 10 M and 3.0 × 10 M, respectively. Due to its excellent sensing performance, LK was successfully applied in actual water samples and test papers for the detection of Fe and F.
一种“开-关-开”荧光探针LK由2-苯甲酰基吡啶和邻香草醛合成，它能在DMSO/H₂O溶液（v/v = 1/1，HEPES缓冲液，1.0 mM，pH 7.0）中依次检测Fe³⁺和F⁻，具有较大的斯托克斯位移（178 nm）。LK不仅对Fe³⁺和F⁻表现出高选择性和灵敏度，而且对其他离子具有很强的抗干扰能力。LK与Fe³⁺以2:1的比例配位，结合常数（K）为1.3×10⁵ M⁻¹。Fe³⁺和F⁻的检测限分别为6.9×10⁻⁷ M和3.0×10⁻⁶ M。由于其优异的传感性能，LK已成功应用于实际水样和试纸中用于检测Fe³⁺和F⁻。
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