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Excitation energy transfer from a fluorophore to single-walled carbon nanotubes
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10.1063/1.3351844
/content/aip/journal/jcp/132/10/10.1063/1.3351844
http://aip.metastore.ingenta.com/content/aip/journal/jcp/132/10/10.1063/1.3351844

Figures

Image of FIG. 1.
FIG. 1.

A schematic representation of a single-walled carbon nanotube formed by rolling up a sheet of graphene. The figure is appropriate for a zig-zag nanotube. On the right, we show the transition dipole of the fluorophore along with the angles that it makes with the coordinate axes.

Image of FIG. 2.
FIG. 2.

Band structure of the (5,5) carbon nanotube. Note that the nanotube is metallic and that electron (hole) bands are symmetric about the zero of energy.

Image of FIG. 3.
FIG. 3.

Band structure of the (6,4) carbon nanotube. Note that the nanotube is semiconducting and bands are farther away from compared to the bands.

Image of FIG. 4.
FIG. 4.

The total rate of energy transfer as a function of the distance between the fluorophore and the (5,5) carbon nanotube. The rates are evaluated for the transfer of a fixed amount of energy given by , the emission maximum of pyrene.

Image of FIG. 5.
FIG. 5.

A comparison of the total rate of energy transfer as a function of the distance between the fluorophore and the (5,5) carbon nanotube with a single emission frequency for the fluorophore and with the experimental emission spectrum of pyrene incorporated into the analysis.

Image of FIG. 6.
FIG. 6.

The total rate of energy transfer to the band gap states of the (6,4) carbon nanotube as a function of the distance between the fluorophore and the tube. The rates are evaluated for the transfer of a fixed amount of energy given by , the emission maximum of pyrene.

Image of FIG. 7.
FIG. 7.

The rate of energy transfer to the lowest excitonic state of the (6,4) carbon nanotube as a function of the distance. The linear fit in the long distance limit shows that the rate follows an exponential dependence for large .

Image of FIG. 8.
FIG. 8.

A plot showing the total rate of energy transfer to the band gap states and the rate to the lowest excitonic state of the (6,4) carbon nanotube as a function of the distance.

Image of FIG. 9.
FIG. 9.

The total rate of energy transfer from pyrene to the (6,4) carbon nanotube as a function of the distance.

Tables

Generic image for table
Table I.

A summary of all the three cases analyzed above. Whether a particular case arises or not for the metallic and the semiconducting tubes is also shown.

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/content/aip/journal/jcp/132/10/10.1063/1.3351844
2010-03-08
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Excitation energy transfer from a fluorophore to single-walled carbon nanotubes
http://aip.metastore.ingenta.com/content/aip/journal/jcp/132/10/10.1063/1.3351844
10.1063/1.3351844
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