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Twisting (conformational changes)-based selective 2D chalcogeno podand fluorescent probes for Cr(III) and Fe(II)
Snigdha Panda1, Palas Baran Pati, Sanjio S Zade
1Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohanpur Campus, PO: BCKV Campus Main Office, Mohanpur 741252, India. snigdha@iiserkol.ac.in
New fluorescent probes with fluorenoazomethine and chalcogeno podands offer specific
Area of Science:
- Supramolecular Chemistry
- Analytical Chemistry
- Materials Science
Background:
- Fluorescent probes are essential tools for detecting metal ions.
- Developing selective and sensitive probes remains a challenge.
- Chalcogeno podands offer unique coordination properties.
Purpose of the Study:
- To design and synthesize novel fluorenoazomethine-based fluorescent probes.
- To investigate the metal ion recognition capabilities of these probes.
- To understand the mechanism of fluorescence response upon metal binding.
Main Methods:
- Synthesis of fluorenoazomethine containing chalcogeno podand ligands.
- Spectroscopic analysis (UV-Vis, fluorescence) for metal ion detection.
- Computational studies to understand binding interactions and conformational changes.
Main Results:
- The synthesized probes exhibit 'turn-on' fluorescence response.
- Selective recognition of Cr(III), Fe(II), and Cu(II) ions was observed.
- Fluorescence intensity correlates with ligand conformational changes upon metal binding.
Conclusions:
- Fluorenoazomethine-based chalcogeno podand probes demonstrate high selectivity for specific metal ions.
- The 'turn-on' fluorescence mechanism is attributed to conformational changes induced by metal coordination.
- These probes show potential for sensitive and selective metal ion detection applications.
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