Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China.
MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, China.
Anal Sci. 2022 Aug;38(8):1095-1103. doi: 10.1007/s44211-022-00138-y. Epub 2022 Jun 22.
Fluorescence enhancement has great advantages and various promising applications for a fluorescent molecular probe, which shows high sensitivity and high selectivity. In this report, a novel pyrene-based fluorescent probe with multidentate ligand (PPD) was synthesized for highly selective detection of Fe(III), which exhibited great fluorescence enhancement response upon the addition of Fe(III) in aqueous solution of pH 3.5 ~ 7.5, with a detection limit of 115 nM. The probe also has good water solubility and photostability. Further fluorescence titration confirmed 1:1 stoichiometric ratio for the probe PPD-Fe(III), which can be applied for quantification of Fe(III). The probe was validated for ferric detection in real water samples by spike and recovery test.
荧光增强对于荧光分子探针具有很大的优势和各种有前途的应用，因为它具有高灵敏度和高选择性。在本报告中，我们合成了一种新型的基于芘的荧光探针（PPD），它具有多齿配体，可用于高度选择性地检测 Fe(III)。在 pH 3.5~7.5 的水溶液中，探针对 Fe(III)的加入表现出了很大的荧光增强响应，检测限低至 115 nM。探针还具有良好的水溶性和光稳定性。进一步的荧光滴定实验证实了探针 PPD-Fe(III)的 1:1 化学计量比，可用于 Fe(III)的定量。该探针通过加标回收实验验证了其在实际水样中检测铁的能力。
