Journal
NANO LETTERS
Volume 14, Issue 7, Pages 3809-3816Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl5009184
Keywords
DNA; nanoparticle; femtosecond laser pulse; plasmonic excitation; polarization; energy transfer
Categories
Funding
- Beutenberg fellowship [TMWFK PE-113-1]
Ask authors/readers for more resources
Here we show plasmon mediated excitation transfer along DNA nanowires over up to one micrometer. Apparently, an electron excitation is initiated by a femtosecond laser pulse that illuminates gold nanoparticles (AuNP) on double stranded DNA (dsDNA). The dependency of this excitation on laser wavelength and polarization are investigated. Excitation of the plasmon resonance of the AuNPs via one- and two-photon absorption at 520 and 1030 nm, respectively, was explored. We demonstrate an excitation transfer along dsDNA molecules at plasmon supported four-photon excitation of AuNP duster or at laser field driven nanoparticle electron tunneling for an alignment of the attached dsDNA to the polarization of the electric field of the laser light. These results extend the previously observed plasmonically induced three-photon excitation transfer along DNA nanowires to another nanoparticle material (gold) and the adapted irradiation wavelengths.
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