Photoluminescence mapping of "as-grown" single-walled carbon nanotubes: a comparison with micelle-encapsulated nanotube solutions.
other · Level V
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Abstract
Band gap photoluminescence (PL) is observed from "as-grown" single-walled carbon nanotubes (SWNTs) in solid form. The relative PL intensities for six specific semiconducting SWNTs are compared directly to those of the micelle-encapsulated SWNTs' solutions to investigate the influence of the micelle dispersion process on PL measurements. The results indicate that sodium dodecyl sulfate (SDS) and sodium cholate (SC) selectively solubilize smaller-diameter nanotubes, whereas sodium dodecylbenzene sulfonate (SDBS) solution does not exhibit significant diameter selectivity within the diameter range studied here (d(t) = 0.829-0.966 nm).
Medical subject headings
- Colloids
- Crystallization
- Luminescence
- Nanotechnology
- Nanotubes, Carbon
- Photochemistry