期刊
JOURNAL OF LUMINESCENCE
卷 196, 期 -, 页码 126-135出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2017.12.019
关键词
Fluorescent sensor; Iron; Synergistic effect; Pyrene-triazole; Cyclotriphosphazene; Real samples
类别
资金
- Gebze Technical University [2017-A102-17]
A novel Fe3+ fluorescent probe based on cyclotriphosphazene platform with three pyrene-triazole units at the upper rim as fluoroionophores and three triethylene glycol monomethyl ether units at the lower rim as solubility agents was designed and synthesized for Fe3+ ions in mixed aqueous media. The probe exhibited metal-binding ability due to the synergistic effect of among three pyrene-triazole moieties on a cyclotriphosphazene scaffold. The fluorescence emission was significantly quenched by the addition of Fe3+ while other added other metal ions and anions induced no spectral changes. The probe sensing conditions such as solvent effects, concentration, competitive metal/anion ions, pH, measurement time and ion binding capability were comprehensively investigated and optimized. The probe was also used for applications in direct determination of Fe3+ in real samples including sea water, tap water, industrial waste water and some medicine tablets. Obtained the results were validated with corresponding data from the spike/recovery test and ICP-OES as the standard analysis method. The synthesized probe was found to be highly selective and sensitive for Fe3+ with both a limit of detection (0.32 mu M) and a limit of quantification (2.88 mu M) as being satisfactory when compared with other existing system for the determination of iron ions.
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