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Citation: LI Jing, HAN Shu-Hua. Bifunctional Fluorescence Molecular Probes for Detection of Aluminum(Ⅲ) and pH[J]. Chinese Journal of Analytical Chemistry, ;2017, 45(9): 1346-1352. doi: 10.11895/j.issn.0253-3820.170125 shu

Bifunctional Fluorescence Molecular Probes for Detection of Aluminum(Ⅲ) and pH

LI Jing ,
HAN Shu-Hua

School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China

Received Date: 2 March 2017
Revised Date: 23 June 2017

A fluorescent molecular probe R6G-Flu was prepared by modifying fluorescein onto Rhodamine 6G. The probe could be used to recognize Al³⁺ specifically, and the detection limit could reach as low as 10^-8 mol/L. After addition of Al³⁺ (10 μmol/L) to the probe, the solution showed a color change from colorless to pink, and green fluorescence was observed under the UV irradiation, which could be perceived by the naked eye. By measuring the fluorescence emission intensity of R6G-Flu at different pH, the probe could also be used to determine pH in acidic pH range (3.00-6.00) and basic pH range (8.00-10.50). The detection results of Al³⁺ and pH indicated that the R6G-Flu was a dual-functional fluorescent molecular probe.
- Bifunctional,
- Fluorescence molecular probe,
- pH detection,
- Aluminum(Ⅲ),
- Rhodamine derivatives
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