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Diversifying Nanoparticle Assemblies in Supramolecule Nanocomposites Via Cylindrical Confinement
Fabrication of complex 3-D nanoparticle assemblies enabled a Au helical ribbon-like assembly with chiral plasmonic response several orders of magnitude higher than that of natural chiral materials.
Significance and Impact
Complex 3-D particle assembly beyond typical morphology defined by the phase diagram opens a viable path toward designer composites with access to targeted properties.
- By imposing geometric constraints in the self-assembly process of supramolecular nanocomposites, new 3-D particle assemblies can be accessed with new properties.
- Chiral plasmonic response in the near IR range is demonstrated with 4-5 orders of magnitudes higher than natural materials;
- Further studies are needed to understand the interface among nanoparticle packing and phase behavior of parent block copolymers under confinement and nanoparticle diffusion.
P. Bai, S. Yang, W. Bao, J. Kao, K. Thorkelsson, M.B. Salmeron, X. Zhang, T. Xu. Nano Letters, 2017, DOI: 10.1021/acs.nanolett.7b03131