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A reliable strategy is presented to combine the preparation of functional building blocks based on polymer beads decorated with luminescent nanocrystals (NCs) and their precise positioning onto suitable patterns by capillary assembly technique. In particular, a layer-by-layer (LbL) polyelectrolyte (PE) deposition procedure has been implemented to provide uniform NC coverage on PS beads, thus conveying the optical properties of luminescent nanocrystals to highly processable PS beads. The latter have then been integrated into patterned stamps by means of template-driven capillary assembly. Their selective positioning has been directed by means of pattern geometry. The use of luminescent (CdSe)ZnS NCs offers a direct optical probe to evaluate the efficiency of the positioning procedure on the substrate, enabling the extension of the method to a wide range of materials, i.e., NCs with different compositions …
American Chemical Society
Publication date: 
7 Sep 2010

Elisabetta Fanizza, Laurent Malaquin, Tobias Kraus, Heiko Wolf, Marinella Striccoli, Norberto Micali, Antonietta Taurino, Angela Agostiano, M Lucia Curri

Biblio References: 
Volume: 26 Issue: 17 Pages: 14294-14300