2007/12/21 by G. Magadur, Gurvan Magadur, Jean-Sébastien Lauret +17
Engineering · Materials Science · Physics and Astronomy · #Carbon Nanotubes in Composites #FOS: Physical sciences #Molecular Junctions and Nanostructures #Optics (physics.optics) #Porphyrin and Phthalocyanine Chemistry #physics.optics
paper · pdf · doi:10.48550/arxiv.0712.3639
arxiv created 2007/12/21 · openalex publication_date 2007/12/21 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Functionalization of carbon nanotubes with hydrosoluble porphyrins (TPPS) is achieved by "π-stacking". The porphyrin/nanotube interaction is studied by means of optical absorption, photoluminescence and photoluminescence excitation spectroscopies. The main absorption line of the porphyrins adsorbed on nanotubes exhibits a 120 meV red shift, which we ascribe to a flattening of the molecule in order to optimize π-π interactions. The porphyrin-nanotube complex shows a strong quenching of the TPPS emission while the photoluminescence intensity of the nanotubes is enhanced when the excitation laser is in resonance with the porphyrin absorption band. This reveals an efficient excitation transfer from the TPPS to the carbon nanotube.