Multiple magnetic characteristics in pure and Mn porphyrin-doped single-walled carbon nanotubes

Sáfar, G. A. M.; Barros, Wdeson P.; Idemori, Ynara Marina; CarvalhoDa-Silva, Dayse; Mendes, J. B. S.; Sinnecker, E. H. C. P.; Rebouças, Júlio S.; Stumpf, Humberto O.

doi:10.1007/s11051-012-0912-7

Cited by 6 publications

(2 citation statements)

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“…Other porphyrin/SWCNT hybrid systems have shown the same kind of interaction. For instance, porphyrins and carbon nanotubes show charge transfer, along with energy transfer, either photoinduced or in the dark. ,− Depending on the porphyrin molecule, and the nanotube chirality, the charge transfer is mild or strong . The influence of the charge transfer is seen on the magnetic, optical or conduction properties of the nanotube or the interacting molecule.…”

Section: Discussionmentioning

confidence: 99%

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Enhanced Oxygen Singlet Production by Hybrid System of Porphyrin and Enriched (6,5) Single-Walled Carbon Nanotubes for Photodynamic Therapy

et al. 2015

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We demonstrate that hybrid systems of porphyrins and chirality enriched (6,5) single-walled carbon nanotubes (E-SWCNTs) are better candidates for photodynamic therapy (PDT) than their components alone. Surprisingly, the E-SWCNTs act as optical absorption enhancers to the porphyrins increasing the oxygen singlet production when illuminated by a light source with energy higher than the E-SWCNT gap plus the equivalent in energy of an E-SWCNT phonon. The phenomenon is explained based on energy transfer from the E-SWCNT to the porphyrin which finally transfers it to the oxygen molecule. The large optical absorption cross section of E-SWCNT and the resonance of the porphyrin to the oxygen singlet–triplet transition are responsible for the synergistic effect.

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Section: Discussionmentioning

confidence: 99%

“…11,40−42 Depending on the porphyrin molecule, and the nanotube chirality, the charge transfer is mild 40 or strong. 42 The influence of the charge transfer is seen on the magnetic, optical or conduction properties of the nanotube or the interacting molecule. One particular example is the nanometrological porphyrin.…”

Section: ■ Discussionmentioning

confidence: 99%