Quantum Plasmonics: Optical Monitoring of DNA-Mediated Charge Transfer in Plasmon Rulers

Sarah Lerch; Björn M Reinhard

doi:10.1002/adma.201503885

Quantum Plasmonics: Optical Monitoring of DNA-Mediated Charge Transfer in Plasmon Rulers

Adv Mater. 2016 Mar 9;28(10):2030-6. doi: 10.1002/adma.201503885. Epub 2016 Jan 20.

Authors

Sarah Lerch¹, Björn M Reinhard¹

Affiliation

¹ Department of Chemistry and The Photonics Center, Boston University, Boston, MA, 02215, USA.

Abstract

Plasmon coupling between DNA-tethered gold nanoparticles is investigated by correlated single-particle spectroscopy and transmission electron microscopy for interparticle separations between 0.5 and 41 nm. Spectral characterization reveals a weakening of the plasmon coupling due to DNA-mediated charge transfer for separations up to 2.8 nm. Electromagnetic simulations indicate a coherent charge transfer across the DNA.

Keywords: gold nanoparticles; plasmon coupling; plasmon hybridization; self-assembly; tunneling.

Publication types

Research Support, N.I.H., Extramural

MeSH terms

DNA / chemistry*
Gold / chemistry
Metal Nanoparticles / chemistry
Microscopy, Electron, Transmission
Quantum Theory*
Silver / chemistry

Substances

Silver
Gold
DNA

Abstract

Publication types

MeSH terms

Substances

Grants and funding