Pump-probe spectroscopy of exciton dynamics in (6,5) carbon nanotubes

Zipeng Zhu, Jared Crochet, Michael S. Arnold, Mark C Hersam, Hendrik Ulbricht, Daniel Resasco, Tobias Hertel

Research output: Contribution to journalArticle

92 Citations (Scopus)

Abstract

We investigate exciton dynamics in isopycnically enriched (6,5) nanotube-DNA suspensions using femtosecond time-resolved pump-probe spectroscopy. The ground state recovery is characterized by a t -0.45 ± 0.03 power law behavior, indicative of a one-dimensional diffusion-limited reaction that is tentatively attributed to subdiffusive trapping of dark excitons. Spectral transients of bright 0A0- singlet excitons within the E11 and E22 manifolds exhibit a photobleach (PB) and a photoabsorption (PA) signal of similar strength. The PA is blue-shifted with respect to the PB-signal by 7.5 meV and is attributed to a transition from the dark singlet exciton 0A0+ to a 0A 0- + 0A0+ state within the two exciton E11 manifold.

Original languageEnglish
Pages (from-to)3831-3835
Number of pages5
JournalJournal of Physical Chemistry C
Volume111
Issue number10
DOIs
Publication statusPublished - Mar 15 2007

Fingerprint

Carbon Nanotubes
Excitons
Carbon nanotubes
carbon nanotubes
excitons
Pumps
Spectroscopy
pumps
probes
spectroscopy
photoabsorption
Electron transitions
Nanotubes
Ground state
nanotubes
Suspensions
DNA
deoxyribonucleic acid
recovery
trapping

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Energy(all)

Cite this

Zhu, Z., Crochet, J., Arnold, M. S., Hersam, M. C., Ulbricht, H., Resasco, D., & Hertel, T. (2007). Pump-probe spectroscopy of exciton dynamics in (6,5) carbon nanotubes. Journal of Physical Chemistry C, 111(10), 3831-3835. https://doi.org/10.1021/jp0669411

Pump-probe spectroscopy of exciton dynamics in (6,5) carbon nanotubes. / Zhu, Zipeng; Crochet, Jared; Arnold, Michael S.; Hersam, Mark C; Ulbricht, Hendrik; Resasco, Daniel; Hertel, Tobias.

In: Journal of Physical Chemistry C, Vol. 111, No. 10, 15.03.2007, p. 3831-3835.

Research output: Contribution to journalArticle

Zhu, Z, Crochet, J, Arnold, MS, Hersam, MC, Ulbricht, H, Resasco, D & Hertel, T 2007, 'Pump-probe spectroscopy of exciton dynamics in (6,5) carbon nanotubes', Journal of Physical Chemistry C, vol. 111, no. 10, pp. 3831-3835. https://doi.org/10.1021/jp0669411
Zhu, Zipeng ; Crochet, Jared ; Arnold, Michael S. ; Hersam, Mark C ; Ulbricht, Hendrik ; Resasco, Daniel ; Hertel, Tobias. / Pump-probe spectroscopy of exciton dynamics in (6,5) carbon nanotubes. In: Journal of Physical Chemistry C. 2007 ; Vol. 111, No. 10. pp. 3831-3835.
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