Photophysical properties in aqueous solutions of C$_{60}$ embedded in 2:1 $\gamma$-cyclodextrin/[60]fullerene inclusion complexes - Sorbonne Université Accéder directement au contenu
Article Dans Une Revue Chemical Physics Letters Année : 2014

Photophysical properties in aqueous solutions of C$_{60}$ embedded in 2:1 $\gamma$-cyclodextrin/[60]fullerene inclusion complexes

Résumé

To resolve conflicting results in the literature, we determine quantitatively the properties of the lowest triplet excited state of water soluble 2:1 host:guest complexes of C$_{60}$ embedded in $\gamma$-cyclodextrin ($\gamma$-CD/C$_{60}$) using laser flash photolysis. The results show that the triplet excited state characteristics of $\gamma$-CD/C$_{60}$ in aqueous solutions are very similar to those observed for C$_{60}$ in organic solvents. Moreover oxygen, in contrast with non-gaseous solutes, can reach the proximity of C$_{60}$ embedded in 2:1 $\gamma$-CD inclusion complexes. In addition, photodestruction quantum yields have been determined for C$_{60}$ in toluene and for C$_{60}$ in $\gamma$-CD inclusion complexes in water.

Domaines

Chimie
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Dates et versions

hal-01708001 , version 1 (13-02-2018)

Identifiants

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Annamaria Quaranta, Huanhuan Qu, Thomas Vencel, Yongmin Zhang, Winfried Leibl, et al.. Photophysical properties in aqueous solutions of C$_{60}$ embedded in 2:1 $\gamma$-cyclodextrin/[60]fullerene inclusion complexes. Chemical Physics Letters, 2014, 614, pp.234-237. ⟨10.1016/j.cplett.2014.09.046⟩. ⟨hal-01708001⟩
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