Comparative studies of singlet oxygen generation by fullerenes and single- and multilayer carbon nanotubes in the form of solid-phase film coatings

Reply to “Comment on ‘Singlet Oxygen 1O2 in Photocatalysis on TiO2. Where Does It Come from?’”

“…We can add here that the width of the luminescence band for 1 O 2 adsorbed on fullerene C 60 presented in ref is near 30 nm (see Figure 8 of ref ), which is also larger than the widths observed for the luminescence of 1 O 2 in solutions. This example confirms quantitative correlation between the red-shift value and bandwidth of 1 O 2 luminescence spectrum.…”

“…The signal of luminescence observed in ref was presented as the convolution of two peaks with maxima at 1273.6 and 1287.2 nm (in the Comment the other number 1289 nm is indicated for the second peak). The authors of ref assumed that these components belong to the transitions 1 Δ g ( v =0)– 3 Σ g – ( v =0) and 1 Δ g ( v =1)– 3 Σ g – ( v =1), respectively. Authors of the Comment refer to this interpretation.…”

Helicenic Complexes of Lanthanides: Influence of the f‐Element on the Intersystem Crossing Efficiency and Competition between Luminescence and Oxygen Sensitization

“…Quite remarkably, singlet oxygen sensitization is so efficient that a singlet oxygen phosphorescence signal could be distinctively observed upon irradiation of complex 1 in the solid state (Figure S8). Although rare, such observations have already been reported with layers of sensitizers, in particular for carbon nanoparticle films . Improvement in singlet oxygen generation properties is less sensitive in the case of 4 (0.50), yet the characteristic intense 2 F 5/9 → 2 F 7/2 Ytterbium luminescence signal around 1000 nm indicates that a very efficient sensitization of the lanthanide occurs from the ligand triplet excited state.…”

Formation of poly(Azure A)-C60 photoactive layer as a novel approach in the heterogeneous photogeneration of singlet oxygen

“…fullerenes, nanotubes and graphene [3][4][5]. The photosensitizing abilities of those carbon allotropes have been studied mainly in the bulk, though it has been demonstrated that fullerenes and carbon nanotubes, when deposited from the solution with polystyrene used to increase the adhesion with the solid support are able to generate singlet oxygen molecule upon illumination [6][7][8]. The yield of singlet oxygen photogeneration by C60 molecule is very high, but its practical use is limited, since it absorbs mainly in UV region.…”