Doping single wall carbon nanotubes with differently charged porphyrins

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Authors
Sáfar, G. A. M.
Ribeiro, H. B.
Fantini, C.
Plentz, F. O.
Santos, A. P.
DeFreitas-Silva, G.
Idemori, Y. M.
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Abstract
Description
Photoluminescence (PL) measurements of porphyrin-doped single wall carbon nanotubes (SWNT) were studied in sodium dodecylbenzenesulfonate (NaDDBS) aqueous dispersions. The PL spectra were used to draw PL maps were the maxima corresponds to absorption-emission excitonic processes related to (E11, E22) first Van Hove singularities of the SWNT electronic structure. The influence of the net charge of the porphyrin was a determinant factor in the energy map maximum shifts (EMMS) compared to the energy map of a pristine NaDDBS/SWNT dispersion. A non-interacting porphyrin is used as a reference to discard the influence of the dielectric constant of the medium in the EMMS.
Keywords
Condensed Matter - Materials Science, Condensed Matter - Other Condensed Matter
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