Journal
SMALL
Volume 15, Issue 26, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201804418
Keywords
DNA self-assembly; fluorescence; nanoantennas; plasmonic enhancement; quantum dots
Categories
Funding
- Volkswagen foundation
- European Research Council (ERC) [336440]
- National Science Foundation (NSF) through the Nebraska Materials Research Science and Engineering Center (MRSEC) [DMR-1420645]
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) [AC 279/2-1]
- European Research Council (ERC) [336440] Funding Source: European Research Council (ERC)
Ask authors/readers for more resources
DNA self-assembly is a powerful tool to arrange optically active components with high accuracy in a large parallel manner. A facile approach to assemble plasmonic antennas consisting of two metallic nanoparticles (40 nm) with a single colloidal quantum dot positioned at the hot spot is presented here. The design approach is based on DNA complementarity, stoichiometry, and steric hindrance principles. Since no intermediate molecules other than short DNA strands are required, the structures possess a very small gap (approximate to 5 nm) which is desired to achieve high Purcell factors and plasmonic enhancement. As a proof-of-concept, the fluorescence emission from antennas assembled with both conventional and ultrasmooth spherical gold particles is measured. An increase in fluorescence is obtained, up to approximate to 30-fold, compared to quantum dots without antenna.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available