研究目的
Designing a fluorescent turn-on Hg2+ probe with high selectivity and sensitivity for detecting mercury ions in aqueous solutions and biological samples.
研究成果
The study successfully developed a fluorescent turn-on probe for Hg2+ with high selectivity and sensitivity, capable of detecting mercury ions in real water samples without tedious pretreatments. The carbamoylmethylamino group was identified as a key structure for designing fluorescent turn-on probes for other metal ions.
研究不足
The probe's performance is optimal over a pH range of 6 to 8, and its fluorescence response towards Hg2+ decreases at pH values higher than 9 due to the formation of HgO.
1：Experimental Design and Method Selection
The study involved the design and synthesis of a fluorescent probe for Hg2+ based on naphthalimide, utilizing carbamoylmethylamino and bis[2-(ethylthio)ethyl]amino groups as tethering functionalities. The probe's performance was evaluated through fluorometric analysis.
2：Sample Selection and Data Sources
Samples included synthesized compounds 1 and 2, and their interactions with various metal ions were tested in aqueous solutions.
3：List of Experimental Equipment and Materials
JASCO FT/IR-4100 spectrometer, Bruker AVANCE III HD NMR spectrometer, Bruker micrOTOF-Q mass spectrometer, Shimadzu UV-2550 UV-Vis Spectrophotometer, JASCO FP-750 spectrofluorometer.
4：Experimental Procedures and Operational Workflow
Synthesis of compounds 1 and 2, fluorometric analysis of their interactions with Hg2+ and other metal ions, measurement of fluorescence quantum yields, and practical analysis of water samples.
5：Data Analysis Methods
Fluorescence spectra were recorded, and quantum yields were calculated using a relative method with reference to the quantum yield of quinine bisulfate.
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