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Ligands in Nanocrystals and Nanocrystal Films Controlling ligands on colloidal nanocrystals is important for particle
synthesis, and so it is closely linked to the MRSEC research into novel
ways of making nanocrystals. Ligands are important because they help
determine nanoparticle properties and affect particle assembly.
Sometimes the ligands formed during synthesis need to be exchanged or
modified. One research direction in the MRSEC is to use Sharpless click
chemistry to attach ligands of interest for particle assembly onto the
ligands directly attached to the particle surface (figure 1). One
example of how ligands affect properties is seen in the nanoindentation
traces in figure 2 of colloidal nanocrystals assembled into films. The
ligands on the colloidal nanocrystals in these films make the films
viscoplastic.
For more details please contact Louis Brus, Jeff Koberstein, Sanat Kumar, Nick Turro, Irving Herman, and Jeff Kysar. . |
Figure 1 Figure 2 |
