Visible luminescence of carbon nanotubes and dependence on functionalization

Article Abstract:

The detection of strong luminescence emissions over a broad wavelength region from well-dispersed carbon nanotubes with excitation wavelengths into the near infrared (IR) is discussed. Better functionalization of the nanotubes improved nanotube dispersion and surface passivation for making emissive energy trapping sites resulting in stronger luminescence emissions.

Electric properties, Luminescence, Wavelength

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Efficient quenching of photoluminescence from functionalized single-walled carbon nanotubes by nitroaromatic molecules

Article Abstract:

The photoluminescence from functionalized single-walled carbon nanotubes is found to be highly sensitive to the presence of nitroaromatic compounds such as nitrobenzene, 4-nitrotoluene and 2,4-dinitrotoluene. The strong luminescence quenching in solution is at the upper limit of diffusion-control and also shows significant static quenching contributions.

Cyclic Crude and Intermediate Manufacturing, Nitrated Aromatics, Analysis, Spectra, Photoluminescence, Absorption spectra, Nitroaromatic compounds

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Optical limiting properties of suspended and solubilized carbon nanotubes

Article Abstract:

Optical limiting properties of the suspensions of carbon nanotubes were determined for 532-nm pulsed laser irradiation, and the results were comparable with those of carbon black aqueous suspension. The results indicate that the carbon nanotubes exhibit significantly weaker optical limiting responses in homogeneous solutions than in suspensions.

Radiation chemistry

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