Journal
RSC ADVANCES
Volume 4, Issue 56, Pages 29479-29484Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra03339f
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Funding
- National Natural Scientifc Foundation of China (NNSFC) [21204042]
- China Postdoctoral Science Foundation [2013T60099]
- National High Technology Research and Development Program of China (863 Program) [2012AA030312]
- Fundamental Research Project of Shenzhen [JCYJ20120830152316443]
- Technology Innovation Program of Shenzhen [CXZZ20130322101824104]
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A new rhodamine B-based fluorescent probe was developed for the selective cascade signaling of trivalent cations (Fe3+, Al3+, Cr3+) and phosphate anion (PO43-). Non-fluorescent rhodamine derivatives can selectively detect trivalent cations over some other metal ions in CH3CN-Tris buffer (1/1, v/v, pH 7.0) solutions, leading to prominent fluorescence OFF-ON switching. The obtained probe-cation complex can subsequently serve as a sensitive and selective chemosensor for PO43-, exhibiting complete signal quenching (fluorescence ON-OFF switching).
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