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DNA-guided lattice remodeling of carbon nanotubes
- Source :
- Science. 377:535-539
- Publication Year :
- 2022
- Publisher :
- American Association for the Advancement of Science (AAAS), 2022.
-
Abstract
- Covalent modification of carbon nanotubes is a promising strategy for engineering their electronic structures. However, keeping modification sites in registration with a nanotube lattice is challenging. We report a solution using DNA-directed, guanine (G)-specific cross-linking chemistry. Through DNA screening we identify a sequence, C 3 GC 7 GC 3 , whose reaction with an (8,3) enantiomer yields minimum disorder-induced Raman mode intensities and photoluminescence Stokes shift, suggesting ordered defect array formation. Single-particle cryo–electron microscopy shows that the C 3 GC 7 GC 3 functionalized (8,3) has an ordered helical structure with a 6.5 angstroms periodicity. Reaction mechanism analysis suggests that the helical periodicity arises from an array of G-modified carbon-carbon bonds separated by a fixed distance along an armchair helical line. Our findings may be used to remodel nanotube lattices for novel electronic properties.
- Subjects :
- Multidisciplinary
Subjects
Details
- ISSN :
- 10959203 and 00368075
- Volume :
- 377
- Database :
- OpenAIRE
- Journal :
- Science
- Accession number :
- edsair.doi.dedup.....6772331fdfc78209fc5388cc4202fe4c