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EnglishA structural model of the fluorescent supramolecular sensor Triton X-100:pyrene:dodecyl-dioxo-2,3,2 is proposed, based on a micellar approach. Under the experimental conditions, phase behavior of the micellar solution restricts ligand:surfactant ratio to 1:10. Thermodynamic and kinetic data indicate that the quenching mechanism involved in the ON-OFF response is intramicellar, and selective compartmentalization of fluorophore and quencher inside micelles can affect effective collisions. An oblate ellipsoid is proposed as the most suitable structure for this micellar-based sensor. Main structural properties of surfactant aggregates and the complex itself are not affected by this assembling, suggesting that the micelle acts as a dynamic substrate
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| Titolo: | Structure and dynamics of micelle-based fluorescent sensor for transition metals. |
| Autori: | |
| Data di pubblicazione: | 2004 |
| Rivista: | |
| Abstract: | A structural model of the fluorescent supramolecular sensor Triton X-100:pyrene:dodecyl-dioxo-2,3,2 is proposed, based on a micellar approach. Under the experimental conditions, phase behavior of the micellar solution restricts ligand:surfactant ratio to 1:10. Thermodynamic and kinetic data indicate that the quenching mechanism involved in the ON-OFF response is intramicellar, and selective compartmentalization of fluorophore and quencher inside micelles can affect effective collisions. An oblate ellipsoid is proposed as the most suitable structure for this micellar-based sensor. Main structural properties of surfactant aggregates and the complex itself are not affected by this assembling, suggesting that the micelle acts as a dynamic substrate |
| Handle: | http://hdl.handle.net/11571/21259 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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http://hdl.handle.net/11571/21259
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