| Autor: |
M V, Karachevtsev, O S, Lytvyn, S G, Stepanian, V S, Leontiev, L, Adamowicz, V A, Karachevtsev |
| Rok vydání: |
2008 |
| Předmět: |
|
| Zdroj: |
Journal of nanoscience and nanotechnology. 8(3) |
| ISSN: |
1533-4880 |
| Popis: |
Hybrids of carbon single-walled nanotubes (SWNT) with fragmented single or double-stranded DNA (fss- or fds-DNA) or polyC were studied by Atom Force Microscopy (AFM) and computer modeling. It was found that fragments of the polymer wrap in several layers around the nanotube, forming a strand-like spindle. In contrast to the fss-DNA, the fds-DNA also forms compact structures near the tube surface due to the formation of self-assembly structures consisting of a few DNA fragments. The hybrids of SWNT with wrapped single-, double- or triple strands of the biopolymer were simulated, and it was shown that such structures are stable. To explain the reason of multi-layer polymeric coating of the nanotube surface, the energy of the intermolecular interactions between different components of polyC was calculated at the MP2/6-31++G** level as well as the interaction energy in the SWNT-cytosine complex. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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