Journal
NANO LETTERS
Volume 12, Issue 4, Pages 2117-2122Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl3004336
Keywords
DNA; FRET; excitonic switch; molecular transmission line; molecular programming; Boolean logic
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Funding
- NSF IDR [1014922]
- NSF MRI [0923541]
- NIH [P20 RR016454]
- DARPA [N66001-01-C-80345]
- W. M. Keck Foundation
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1014922] Funding Source: National Science Foundation
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [0923541] Funding Source: National Science Foundation
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Fluorescence resonance energy transfer (FRET) is a promising means of enabling information processing in nanoscale devices, but dynamic control over exciton pathways is required. Here, we demonstrate the operation of two complementary switches consisting of diffusive FRET transmission lines in which exciton flow is controlled by DNA. Repeatable switching is accomplished by the removal or addition of fluorophores through toehold-mediated strand invasion. In principle, these switches can be networked to implement any Boolean function.
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