Fig. 1
From: Effect of interstitial palladium on plasmon-driven charge transfer in nanoparticle dimers
DNA-guided growth of Pd NPs in plasmon rulers. a Model for plasmon ruler (PR) assembly from Au NPs functionalized with a low number of DNA molecules incorporated into a monolayer of PEG-COOH for colloidal stability. b Integration of Pd NPs. Pd2+ binds to DNA and is subsequently reduced through the reducing agent DMAB. Distributions of the plasmon resonance wavelength of PRs before and after Pd2+ binding are included as green and orange histograms, respectively. c TEM image of PEGylated NP control (scale bar = 10 nm). d TEM image of PR with low Pd NP loading after reduction of Pd2+. (scale bars = 5 nm). e TEM image of PR with high Pd NP loading after reduction of Pd2+ (scale bar = 10 nm)
