Determination of DNA-base orientation on carbon nanotubes through directional optical absorbance.
basic_science · Level V
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- Record sourced from PubMed, PMID 17608443.
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Abstract
We develop an approach for determining the orientation of DNA bases attached to carbon nanotubes (CNTs), by combining ab initio time-dependent density functional theory and optical spectroscopy measurements. The structures we find are in good agreement with the geometry of nucleosides on a (10,0) CNT obtained from molecular simulations using empirical force fields. The results shed light into the complex interactions of the DNA-CNT system, a candidate for ultrafast DNA sequencing through electronic probes.
Medical subject headings
- DNA
- Models, Chemical
- Nanotubes, Carbon
- Nucleosides
- Refractometry