Evidence for the contribution of degenerate hydrogen atom transport to the persistence of sulfanyl radicals anchored to nanostructured hybrid materials

Francois Vibert (1) , Emily Bloch (2) , Michèle P Bertrand (1) , Severine Queyroy (1) , Stéphane Gastaldi (1) , Eric Besson (1)

1 ICR - Institut de Chimie Radicalaire
2 MADIREL - Matériaux divisés, interfaces, réactivité, électrochimie

a Nanostructured functionalized silicas were used as a platform to compare the behaviour of anchored arylsulfanyl radical depending on the nature of the precursor (diazene/thiol). The radicals generated from thiols exhibit higher half-lifetimes than the radicals issued from diazenes. The ability of thiols to maintain the sulfanyl radical density via degenerate hydrogen atom transfer is likely to account for this sharp difference.

Domaines: Chimie

Francois Vibert, Emily Bloch, Michèle P Bertrand, Severine Queyroy, Stéphane Gastaldi, et al.. Evidence for the contribution of degenerate hydrogen atom transport to the persistence of sulfanyl radicals anchored to nanostructured hybrid materials. New Journal of Chemistry, 2017, 41 (14), pp.6678 - 6684. ⟨10.1039/C7NJ00891K⟩. ⟨hal-01784911⟩