Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 117, Issue 20, Pages 10645-10653Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1918504117
Keywords
colloids; crystals; DNA
Categories
Funding
- Simons Foundation
- National Research Foundation (Korea) [2017M3A7B8065528]
- Department of Energy [DE-SC0007991]
- NSF [1610788]
- National Research Foundation of Korea [2017M3A7B8065528] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1610788] Funding Source: National Science Foundation
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Patchy particles with shape complementarity can serve as building blocks for assembling colloidal superstructures. Alternatively, encoding information on patches using DNA can direct assembly into a variety of crystalline or other preprogrammed structures. Here, we present a tool where DNA is used both to engineer shape and to encode information on colloidal particles. Two reactive oil emulsions with different but complementary DNA (cDNA) brushes are assembled into CsCl-like crystalline lattices. The DNA brushes are recruited to and ultimately localized at the junctions between neighboring droplets, which gives rise to DNA-encoded faceted patches. The emulsions are then solidified by ultraviolet (UV) polymerization, producing faceted patchy particles. The facet size and DNA distribution are determined by the balance between the DNA binding energy and the elastic deformation energy of droplets. This method leads to a variety of new patchy particles with directional interactions in scalable quantities.
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