期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 224, 期 -, 页码 661-667出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2015.10.086
关键词
NIR; Fluorescent probe; Fe3+; Cu2+; Cyanine; Rhodamine
资金
- National Science Foundation of China [21572209, 21442002]
- Science-Technology Foundation for Outstanding Young Scientists of Henan Academy of Agricultural Sciences [2013YQ24, 2016YQ22]
A novel rhodamine-cyanine based probe LS1 was designed and synthesized, which can act as a bifunctional NIR ratiometric colorimetric and fluorescent probe for detecting Fe3+ and Cu2+ in solvent of MeOH/H2O and MeCN/H2O respectively. As expected, it exhibited high selectivity and sensitivity for detecting Fe3+ and Cu2+ over other commonly coexistent metal ions in their respective systems with a broad pH span. The detection limit was measured to be 0.737 mu M for Fe3' and 1.019 mu M for Cu2+. Furthermore, fluorescence imaging experiments of Cu2+ ions in living SH-SY5Y109 cells demonstrated its value of practical application in biological systems. (C) 2015 Elsevier B.V. All rights reserved.
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