Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 226, Issue -, Pages 364-369Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2015.12.009
Keywords
Fluorescent probes; Bodipy fluorophore; Gold ions
Funding
- National Natural Science Foundation of China [21302114, 21172137]
- Natural Science Foundation for youth of Shanxi [2014021015-5]
- Scientific and Technological Innovation Programs of Higher Education
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A novel fluorescent probe based on a boron dipyrromethene (Bodipy) derivative for Au3+ has been designed, synthesized, and characterized. The probe comprises a spectroscopic unit of Bodipy and a specific Au3+ binding unit of 2-(phenylethynyl)aniline. The probe itself is almost no fluorescence because of photo-induced intramolecular electron transfer from the aniline unit to the Bodipy moiety, whereas transforming the 2-(phenylethynyl)aniline unit into the 2-phenylindole by Au3+ induced intramolecular cyclization reaction gives rise to strong fluorescence emission. In the system, an excellent selectivity toward the detection of Au3+ in aqueous solution over a wide range of tested cations was observed. Moreover, this probe can be used to detect Au3+ in real water samples, and can be used for fluorescent bioimaging of Au3+ in living cells. (C) 2015 Elsevier B.V. All rights reserved.
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