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June 11th, 2007
cientists have made multilayered films of inorganic nanoparticles with the help of DNA bases.
A team of researchers, led by Dayang Wang, at the Max Planck Institute of Colloids and Interfaces, Potsdam, Germany, formed a layer of gold nanoparticles at the interface between water and toluene. By alternately changing the surface groups on the gold nanoparticles through specific pairing of functionalised DNA bases, Wang attached a layer of positively-charged cadmium telluride nanoparticles on the aqueous side of the interface and a layer of hydrophobic silver nanoparticles on the organic side.
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