Doping behavior of single-walled carbon nanotubes with differently charged porphyrins

作者：Safar G A M^*; Ribeiro H B; Fantini C; Plentz F O; Santos A P; DeFreitas Silva G; Idemori Y M

来源：Carbon, 2010, 48(2): 377-379.

DOI：10.1016/j.carbon.2009.09.039

Photoluminescence (PL) measurements of porphyrin-doped single-walled carbon nanotubes (SWCNTs) were performed in sodium dodecylbenzenesulfonate (NaDDBS) aqueous dispersions. PL spectra were used to draw PL maps in which maxima correspond to absorption-emission excitonic processes related to (E11, E22) first Van Hove singularities of the SWCNT electronic structure. The influence of the net charge of the porphyrin is a determining factor in the energy map maximum shifts (EMMS) relative to that of a pristine NaDDBS/SWCNT dispersion. A non-interacting porphyrin is used as a reference to discard the influence of the dielectric constant of the medium in the EMMS.

• 出版日期2010-2