- New York NY, US Marcus Weck - New York NY, US Yu Wang - New York NY, US Yufeng Wang - New York NY, US Xiaolong Zheng - New York NY, US Etienne Ducrot - New York NY, US Jeremy Yodh - New York NY, US
Assignee:
New York University - New York NY
International Classification:
C07H 21/04
Abstract:
DNA-coated colloids are introduced that can rearrange and anneal using single-stranded DNA coatings with thicknesses that are smaller than the colloidal particles, and with areal densities 5—than previously achieved. Micrometer-sized colloidal particles, such as poly(styrene), poly(methylmethacrylate) (PMMA), silica and titania, and 3-(trimethoxysilyl)propyl methacrylate (TPM), are coated with DNA by strain-promoted alkyne-azide cycloaddition. This enables growth of large colloidal crystals from a wide range of micrometer-sized DNA-coated colloids. When quenched from above to below the melting temperature, the rate of crystal formation exhibits the familiar maximum for intermediate temperature quenches observed in metallic alloys, but over a temperature range smaller by two orders of magnitude, owing to the highly temperature-sensitive diffusion between aggregated DNA-coated colloids.
Colloids With Valence: Fabrication, Functionalization And Directional Bonding
David J. Pine - New York NY, US Yufeng Wang - New York NY, US Yu Wang - New York NY, US Marcus Weck - New York NY, US - New York NY, US
Assignee:
New York University - New York NY
International Classification:
B01J 13/00 C08F 212/08 C08F 112/08
Abstract:
A method and articles of manufacture for creating colloidal clusters and functionalized patchy particles. The method includes selecting at least one type of colloidal particle, functionalizing a patch of the colloidal particle and mixing a plurality of the colloidal particles to construct a cluster with particular desired geometries properties based on the bonding of the colloidal particles by virtue of the patch having bond-type characteristic analogous to, but not limited to atomic orbitals and other symmetries.
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