A DNA-based approach to the carbon nanotube sorting problem
By X. Tu, Ming Zheng. 2008
140 citations recorded by the source corpus.
Carbon nanotube sorting, i.e., the separation of a mixture of tubes into different electronic types and further into species with a specific chirality, is a fascinating problem of both scientific and technological importance. It is one of those problems that are easy to describe but difficult to solve. Single-stranded DNA forms stable complexes with carbon nanotubes and disperses them effectively in water. A particular DNA sequence of alternating guanine (G) and thymine (T) nucleotides ((GT)n, with n = 10 to 45) self-assembles into an ordered supramolecular structure around an individual nanotube, in such a way that the electrostatic properties of the DNA-carbon nanotube hybrid depend on tube structure, enabling nanotube separation by anion-exchange chromatography. This review provides a summary of the separation of metallic and semiconducting tubes, and purification of single (n, m) tubes using the DNA-wrapping approach. We will present our current understanding of the DNA-carbon nanotube hybrid structure and separation mechanisms, and predict future developments of the DNA-based approach.
Subfields: Biomedical Engineering, Materials Chemistry, Molecular Biology
View Paper: https://www.semanticscholar.org/paper/fdc0160ddace1308e0971ff2d97f71845f530085
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In Biomedical Engineering
In Materials Chemistry
In Molecular Biology
Citations in the corpus
- Carbon Nanotubes in Biology and Medicine: In vitro and in vivo Detection, Imaging and Drug Delivery (2009, methodology): “SWNT NIR fluorescence may be multiplexed via microarray printing technology, and unique SWNT fluorophores may be obtained by chirality separation [74].”
- DNA sequence motifs for structure-specific recognition and separation of carbon nanotubes (2009, background): “For (8,3), (9,4), (7,6), (8,6) and (8,7) tubes, even E44 can be clearly identified.”