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Quantum Plasmonics: Optical Monitoring of DNA‐Mediated Charge Transfer in Plasmon Rulers
Author(s) -
Lerch Sarah,
Reinhard Björn M.
Publication year - 2016
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201503885
Subject(s) - plasmon , photonics , charge (physics) , nanotechnology , physics , library science , chemistry , computer science , materials science , optoelectronics , quantum mechanics
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.