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Published on: July 4, 2011
A2B corroles: Fluorescence signaling systems for sensing fluoride ions
Omprakash Yadav1, Atul Varshney1, Anil Kumar1
1Department of Applied Chemistry, Delhi Technological University, Delhi 42, India.
Abstract:
Four free base corroles, 1-4, A2B, (where A = nitrophenyl, and B = pentafluorophenyl, 2, 6-difluoro, 3, 4, 5-trifluoro and 4-carboxymethylphenyl group) have been synthesized, characterized and demonstrated as excellent chemosensor for the detection of fluoride ions selectively in toluene solution. The reported corroles shows highest quantum yield in free base form of porphyrinoid systems so far. All these corrole, 1-4, have the excellent ability to sense fluoride ion. Cumulative effect of static and dynamic factors is responsible for the quenching of fluorescence which indicates the detection of fluoride ion in solution.
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