Highly Efficient Binding of DNA on the Sidewalls and Tips of Carbon Nanotubes Using Photochemistry
| Autor: | Mei Gao, Sarah F. R. Taylor, Shaoming Huang, Maxine J. McCall, Liming Dai, Minoo J. Moghaddam |
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| Rok vydání: | 2003 |
| Předmět: |
Materials science
Oligonucleotide Mechanical Engineering Nanoparticle Bioengineering Nanotechnology General Chemistry Carbon nanotube Condensed Matter Physics Photochemistry law.invention chemistry.chemical_compound chemistry law Transmission electron microscopy Colloidal gold Surface modification General Materials Science Azide DNA |
| Zdroj: | Nano Letters. 4:89-93 |
| ISSN: | 1530-6992 1530-6984 |
| DOI: | 10.1021/nl034915y |
| Popis: | The sidewalls of vertically aligned, multiwalled carbon nanotubes were functionalized using azide photochemistry, and DNA oligonucleotides were synthesized in situ from the reactive group on each photoadduct to produce water-soluble DNA-coated nanotubes. The functional DNA sites on the nanotubes were visualized from gold nanoparticles modified with complementary DNA and using TEM. The sidewall functionalization enabled further DNA-directed modification of the nanotubes' surfaces with nanoparticles. The DNA-coated vertically aligned nanotubes offer the architecture for a highly loaded three-dimensional DNA chip. |
| Databáze: | OpenAIRE |
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