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JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 130, Issue 12, Pages 4122-4128Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja711103y
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We report optical band gap modifications of single-walled carbon nanotubes upon C-60 insertions by using photoluminescence and the corresponding excitation spectroscopy. The shifts in optical transition energies strongly depend on the tube diameter (d(t)) and the 2n + m family type, which can be explained by the local strain and the hybridization between the nanotube states and the C-60 molecular orbitals. The present results provide possible design rules for nanotube-based heterostructures having a specific type of electronic functionality.
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