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Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
Published on: December 27, 2018
Fully reversible guest exchange in tetraphosphonate cavitand complexes probed by fluorescence spectroscopy
Elisa Biavardi1, Gionata Battistini, Marco Montalti
1Dipartimento di Chimica Organica e Industriale, Universita di Parma, and INSTM UdR Parma, Viale G. P. Usberti 17 A, I-43100 Parma, Italy.
Chemical Communications (Cambridge, England)
|March 28, 2008
Summary
Reversible guest inclusion in phosphonate cavitands was monitored using luminescence. This was achieved by altering an electron-transfer reaction
Area of Science:
- Supramolecular Chemistry
- Photochemistry
- Materials Science
Background:
- Phosphonate cavitands are molecular hosts capable of encapsulating guest molecules.
- Luminescence-based detection methods offer high sensitivity for monitoring molecular interactions.
Purpose of the Study:
- To develop a method for monitoring reversible guest inclusion in phosphonate cavitands.
- To investigate the relationship between guest inclusion and luminescence properties.
Main Methods:
- Utilizing phosphonate cavitands with inherent luminescence.
- Monitoring changes in luminescence intensity upon guest molecule binding.
- Correlating luminescence modulation with the exoergonicity of electron-transfer reactions.
Main Results:
- A significant increase in luminescence intensity was observed upon guest inclusion.
- The luminescence changes directly correlate with the modulation of electron-transfer reaction exoergonicity.
- The guest inclusion process was demonstrated to be reversible.
Conclusions:
- Luminescence intensity serves as a reliable indicator for reversible guest inclusion in phosphonate cavitands.
- Modulating electron-transfer reaction exoergonicity is an effective strategy for guest sensing.
- This work provides a novel luminescent sensing platform for supramolecular chemistry.
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