A fluorescence on–off sensor for Cu2+and its resultant complex as an off–on sensor for Cr3+in aqueous media
| Autor: | Xiang Zhang, Yunling Gao, Cong Zhang, Jieming Shu, Haiyan Chen, Kejian Yao |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
musculoskeletal diseases
inorganic chemicals In situ Aqueous medium Chemistry General Chemical Engineering Confocal Analytical chemistry chemical and pharmacologic phenomena hemic and immune systems General Chemistry Photochemistry Fluorescence Ion Paramagnetism Fluorescence microscope Stoichiometry |
| Zdroj: | RSC Advances. 5:74629-74637 |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c5ra13782a |
| Popis: | A new coumarin–quinoline based sensor 1 has been synthesized. The paramagnetic Cu2+ ion turned off the fluorescence of sensor 1 with a 1:1 binding stoichiometry. The resultant 1–Cu2+ complex could act in situ as an efficient “off–on” fluorescence sensor for the paramagnetic Cr3+ ion triggered by the 1:1 replacement of Cu2+ with Cr3+. This selective fluorescence “on–off–on” sensor was used to identify Cu2+ and Cr3+ in living breast cancer MCF-7 cells using confocal fluorescence microscopy, indicating that sensor 1 has a potential application for the selective detection of Cu2+ and Cr3+ in living cells. |
| Databáze: | OpenAIRE |
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