Photoinduced luminescence blinking and bleaching in individual single-walled carbon nanotubes.

The temporal evolution of photoluminescence in individual single-walled carbon nanotubes (SWNT) under strong laser irradiation is studied and pronounced blinking and bleaching is observed, caused by photoinduced oxidation that subsequently quenches mobile excitons. The nanotubes are isolated with sodium cholate and spun onto either a glass or mica surface. Their bleaching behavior is investigated for variable laser intensities in air and argon atmosphere. The decay rate for luminescence bleaching generally increases with higher laser intensity, however saturating on mica substrates, which is attributed to limited availability of oxygen in the vicinity of the nanotubes. Step-like events in the luminescence time traces corresponding to single oxidation events are analyzed regarding relative step height and suggest an exciton diffusion range of about 105 nm.

[1]  A. Jorio,et al.  Exciton decay dynamics in individual carbon nanotubes at room temperature , 2008 .

[2]  M. Zheng,et al.  Fluorescence efficiency of individual carbon nanotubes. , 2007, Nano letters.

[3]  Riichiro Saito,et al.  Raman spectroscopy of carbon nanotubes , 2005 .

[4]  D. Courjon,et al.  Influence of the water layer on the shear force damping in near-field microscopy , 1998 .

[5]  Manfred M. Kappes,et al.  Single-walled carbon nanotubes show stable emission and simple photoluminescence spectra with weak excitation sidebands at cryogenic temperatures , 2007 .

[6]  M. Steigerwald,et al.  Reversible surface oxidation and efficient luminescence quenching in semiconductor single-wall carbon nanotubes. , 2004, Journal of the American Chemical Society.

[7]  Leif O. Brown,et al.  Reversible fluorescence quenching in carbon nanotubes for biomolecular sensing. , 2007, Nature Nanotechnology.

[8]  Paul F. Barbara,et al.  Discrete Intensity Jumps and Intramolecular Electronic Energy Transfer in the Spectroscopy of Single Conjugated Polymer Molecules , 1997 .

[9]  P. Barbara,et al.  Single-Molecule Spectroscopy of the Conjugated Polymer MEH-PPV , 1999 .

[10]  J. Lefebvre,et al.  Temperature-dependent photoluminescence from single-walled carbon nanotubes , 2004 .

[11]  M. Arnold,et al.  Enrichment of single-walled carbon nanotubes by diameter in density gradients. , 2005, Nano letters.

[12]  Mark C. Hersam,et al.  Sorting carbon nanotubes by electronic structure using density differentiation , 2006, Nature nanotechnology.

[13]  Louis E. Brus,et al.  Observation of rapid Auger recombination in optically excited semiconducting carbon nanotubes , 2004 .

[14]  Gordana Dukovic,et al.  Time-resolved fluorescence of carbon nanotubes and its implication for radiative lifetimes. , 2004, Physical review letters.

[15]  Cohen,et al.  Electronic properties of oxidized carbon nanotubes , 2000, Physical review letters.

[16]  J. Tour,et al.  Stepwise Quenching of Exciton Fluorescence in Carbon Nanotubes by Single-Molecule Reactions , 2007, Science.

[17]  Zhuang Liu,et al.  Selective probing and imaging of cells with single walled carbon nanotubes as near-infrared fluorescent molecules. , 2008, Nano letters.

[18]  E. E. Muryumin,et al.  Atomic oxygen chemisorption on the sidewall of zigzag single-walled carbon nanotubes , 2007 .

[19]  D. F. Ogletree,et al.  The structure of molecularly thin films of water on mica in humid environments , 1995 .

[20]  P. Ajayan,et al.  Photoinduced oxidation of carbon nanotubes , 2003 .

[21]  V. C. Moore,et al.  Band Gap Fluorescence from Individual Single-Walled Carbon Nanotubes , 2002, Science.

[22]  Stephen K. Doorn,et al.  Chiral selectivity in the charge-transfer bleaching of single-walled carbon-nanotube spectra , 2005, Nature materials.

[23]  P. Avouris,et al.  Theoretical Study of Oxygen Adsorption on Graphite and the (8,0) Single-walled Carbon Nanotube , 2001 .

[24]  Takao Someya,et al.  Photoluminescence intermittency in an individual single-walled carbon nanotube at room temperature , 2005 .

[25]  S. Doorn,et al.  Low temperature emission spectra of individual single-walled carbon nanotubes: multiplicity of subspecies within single-species nanotube ensembles. , 2004, Physical review letters.

[26]  Bert Hecht,et al.  Single dye molecules in an oxygen-depleted environment as photostable organic triggered single-photon sources , 2004 .

[27]  Zettl,et al.  Extreme oxygen sensitivity of electronic properties of carbon nanotubes , 2000, Science.

[28]  Carter Kittrell,et al.  Reversible, Band-Gap-Selective Protonation of Single-Walled Carbon Nanotubes in Solution , 2003 .

[29]  Christoph Lienau,et al.  Exponential decay lifetimes of excitons in individual single-walled carbon nanotubes. , 2005, Physical review letters.

[30]  A. Green,et al.  Ultracentrifugation of single-walled nanotubes , 2007 .

[31]  S. Bachilo,et al.  Near-infrared fluorescence microscopy of single-walled carbon nanotubes in phagocytic cells. , 2004, Journal of the American Chemical Society.

[32]  L. Novotný,et al.  Simultaneous Fluorescence and Raman Scattering from Single Carbon Nanotubes , 2003, Science.

[33]  J. Lakowicz,et al.  Single-Molecule Studies of Enhanced Fluorescence on Silver Island Films , 2007, Plasmonics.

[34]  X. Gong,et al.  Oxidation of carbon nanotubes by singlet O2. , 2003, Physical review letters.

[35]  S. Bachilo,et al.  Fluorescence spectroscopy of single-walled carbon nanotubes in aqueous suspension , 2004 .