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We investigate excitation energy transfer from an encapsulated quaterrylene molecule to a single-walled carbon nanotube by means of femtosecond pump-probe spectroscopy. The time constant of energy transfer becomes shorter with increasing average diameter of nanotube: 1.4±0.2ps for 1.0nm, 1.1±0.2ps for 1.4nm, and 0.4±0.1ps for 1.8nm. The observed behavior is discussed considering the distance of less...
We investigated luminescence decay kinetics in single-walled carbon nanotubes in large bundles excited by femtosecond pulses. The time constant of luminescence decay becomes longer with decrease in photon energy: 40fs at 1.2eV and 380fs at 0.6eV. This behavior is explained by exciton energy transfer from an excited to neighboring tubes.
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