Hybrid-monolayers of dendritic polymers with inorganic nanoparticles

HYBRID-MONOLAYERS OF DENDRITIC POLYMERS WITH INORGANIC NANOPARTICLES 

Metal nanoparticles have been used for many applications because of their unique characteristics, even before they were visualized as small particles of nano-meter order by using a transmission electron microscope [118]. For example, colored glasses, which gained in popularity in medieval times, contain nanoparticles of noble metals. These colors originate from the SPR of metal nanoparticles, which is the resonance phenomenon of surface electron density wave with incident light wave at the metal surface [119]. Since this resonance is sensitive to the dielectric constant of surrounding media, the phenomenon has 

Surface of gold electrodes was modified with thiol SAM and further reacted with PAMAM dendrimers by electrostatic interaction [148], Then, Prussian Blue (PB) was anchored on the surface of electrodes. The surface coverage of PB at acidic condition is improved on the dendrimer-modified electrodes as compared with that on naked electrodes. Moreover, the stability of electrodes at neutral pH increases on dendrimer-modified electrodes, while PB film is not formed on naked electrodes at the condition of neutral pH. It is suggested that, in the stable PB-dendrimer composite films prepared on thiolated gold electrode surfaces, the uptake of PB takes place inside the dendrimer and PB molecules retain their electrocatalytic properties for the electro-oxidation due to the permeability and hosting properties of dendrimer. 

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