期刊
RSC ADVANCES
卷 7, 期 57, 页码 36007-36014出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra05064j
关键词
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资金
- National Natural Science Foundation of China [61671162, 21372051]
- Technology Plan of Guangdong Province [2016A010103031]
- Guangdong Province Universities and Colleges Young Pearl River Scholar Funded Scheme
Two Schiff base derivatives (S1 and S2) containing triphenylamine and indole fluorophores groups have been synthesized via a one-pot reaction and utilized as fluorescence turn-off sensors towards Fe3+ ions in THF. S1 and S2 demonstrated fluorescence turn-off sensing towards Fe3+ ions, via photoinduced electron transfer (PET). The 2 : 1 stoichiometries of the sensor complexes ([S1, S2] + Fe3+) were calculated from Job plots based on UV-vis absorption titrations. The detection limits (LODs) of [S1, S2] + Fe3+ sensor responses were calculated by their standard deviation, linear fitting and from their fluorescence binding isotherms. More importantly, [S1, S2] + Fe3+ sensors were found to be active in aqueous media within a wide range of pH values. In addition, biological imaging and membrane permeability demonstrated that S1 could act as a turn-off fluorescence chemosensor for Fe3+ in living cells.
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