Modular Design of Ordered Polymer-Nanoparticle Composites
(a) Schematic illustration of nanocrystals end-grafted with polymer brushes. (b) Scaling relations of ligand shell thickness and ligand volume fraction as a function of polymer molecular weight. (c) Schematic and (d) TEM image of AB-type binary superlattices.
Created a diverse array of self-assembled binary superlattices using polymer-grafted nanocrystals as the colloidal building blocks.
Significance and Impact
This study should open up new and exciting opportunities for the bottom-up design of functional inorganic -organic hybrid materials with controlled nanoscale interfaces and mesoscale ordering.
- The 'grafting-to' method allows for independent optimization of nanocrystals and polymeric ligands.
- 10 distinct types of 2D and 3D binary superlattice structures can be accessed.