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Quantum efficiency of energy transfer in non-covalent carbon nanotube/porphyrin compounds

C. Roquelet, D. Garrot, J. S. Lauret, C. Voisin, V. Alain-Rizzo, P. Roussignol, J. A. Delaire and E. Deleporte Appl. Phys. Lett., 2010, 97 141918

Références :

Appl. Phys. Lett., 2010, 97 141918

Auteur(s) : 

C. Roquelet, D. Garrot, J. S. Lauret, C. Voisin, V. Alain-Rizzo, P. Roussignol, J. A. Delaire and E. Deleporte







We report on the quantum yield of excitation energy transfer in noncovalently bound nanotube/porphyrin compounds. Evidence for energy transfer is gained from photoluminescence excitation experiments. We perform a quantitative evaluation of the transfer quantum yield in the case of (6,5) nanotubes through three independent methods: quantitative photoluminescence excitation measurements, evaluation of the luminescence quenching of the donor (porphyrin) and ultrafast transient absorption measurements. The latter shows a tremendous increase in the porphyrin recovery rate upon incorporation in the compound. All these measurements consistently lead to an exceptional quantum yield: η ∼ 1 (10−5<1−η<10−3).




Type :
Publication
Dates :
Paru le 8 octobre 2010
Informations complémentaires :
doi:10.1063/1.3496470

 

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