Changes in the fluorescence spectrum of individual single-wall carbon nanotubes induced by light-assisted oxidation with hydroperoxide

Article Abstract:

Fluorescence-spectrum measurements are used to investigate the effects of light-assisted oxidation with H2O2 (LAOx) on single-wall carbon nanotubes (SWNTs) that are individually dispersed in an aqueous solution of surfactant. The results have shown that the effect of LAOx depended on the SWNT diameters and the quenching of SWNT fluorescence became irreversible as a result of LAOx, indicating that SWNTs were burnt out.

Usage, Spectra, Fluorescence spectroscopy, Nanotubes

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Dissociation of electrolytes in a nano-aqueous system within single-wall carbon nanotubes

Article Abstract:

The changes of the electronic states of single-wall carbon nanotubes (SWNTs) that are treated with various aqueous solutions of electrolytes are investigated. It concluded that the optical spectra of SWNTs were significantly affected when SWNTs that had opened holes or removed caps, were treated through immersion in an aqueous solution of electrolytes, followed by drying at room temperature.

Analysis, Electrolytes, Carbon compounds, Aqueous solution reactions

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Isolating single-walled carbon nanohorns as small aggregates through a dispersion method

Article Abstract:

A study on isolating small aggregates of single-wall carbon nanohorns (SWNHs) by dispersing SWNHs in a D2O solution of sodium dodecylbenzene sulfonate (NaDDBS) and applied ultrasonic and ultra centrifuging is presented. The study reveals that the NaDDBS surfactant isolates SWNH aggregates and the isolated aggregates float within the upper layer of NaDDBS/D2O.

Science & research, Surface active agents, Surface Active Agent Manufacturing, Research, Carbon, Nanotechnology

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