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- Title
Optically Triggered Melting of DNA on Individual Semiconducting Carbon Nanotubes.
- Authors
Wang, Chunyan; Meany, Brendan; Wang, YuHuang
- Abstract
Optical excitation of nanostructures is known to induce local heating, a phenomenon that has been intensely exploited for drug release, gene delivery, cancer thermotherapy, and energy harvesting. However, the effect is typically small requiring collective heating of a large concentration or aggregates of particles. Herein, we show that optical excitation of individual semiconducting single-walled carbon nanotubes triggers strongly localized heating adequate to melt non-covalently attached double-stranded oligonucleotides in solution. In contrast to conventional thermal dehybridization, this optically triggered DNA melting occurs at a solution temperature that is 22 °C lower than the DNA melting temperature. This unexpectedly large localized optical heating effect provides important new insights to design selective optical nanoheaters at the single particle level.
- Subjects
DNA nanotechnology; NANOSTRUCTURES; CARBON nanotubes; OLIGONUCLEOTIDES; PHOTONS
- Publication
Angewandte Chemie, 2017, Vol 129, Issue 32, p9454
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201703332