Ping Wang, Haili He and Yongdong Jin Shape Transformation and Visible Region Plasmonic Modulation of Silver Nanoplates by Graphene Oxide Small 8
The plasmon band of Ag nanoplates can be continuously tuned over the visible region by simply stirring with graphene oxide (GO) nanosheets, accompanied with the shape transformation from triangle to round. The ability of GO to competitively adsorb ligands (from Ag nanoplates) has been considered to response for this interesting change. Through the protection of sufficient citrate ions, the resultant Ag nanoplates exhibit the excellent stability over a long time without noticeable change of their optical properties.
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