Enhancing Visible-Light Photocatalysis <i>via</i> Endohedral Functionalization of Single-Walled Carbon Nanotubes with Organic Dyes

The encapsulation of an organic dye, 10-phenylphenothiazine (PTH), in the inner cavity single-walled carbon nanotubes (SWNTs) as a breaking heterogenization strategy is presented. PTH@oSWNT material was microscopically and spectroscopically characterized, showing intense photoemission when illuminated with visible light at nanoscale. Thus, employed heterogeneous photocatalyst single electron transfer dehalogenation reactions under irradiation. showed enhanced photocatalytic activity, achieving turnover numbers high 3200, complete recyclability stability for more than eight cycles. Computational calculations confirm that electronic communication between both partners established because, upon illumination, excited PTH transferred from π system molecule to delocalized π-cloud SWNT, thus justifying activity.