Reconstitutable nanoparticle superlattices

Boya Radha, Andrew J. Senesi, Matthew N. O'Brien, Mary X. Wang, Evelyn Auyeung, Byeongdu Lee, Chad A Mirkin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

Colloidal self-assembly predominantly results in lattices that are either: (1) fixed in the solid state and not amenable to additional modification, or (2) in solution, capable of dynamic adjustment, but difficult to transition to other environments. Accordingly, approaches to both dynamically adjust the interparticle spacing of nanoparticle superlattices and reversibly transfer superlattices between solution-phase and solid state environments are limited. In this manuscript, we report the reversible contraction and expansion of nanoparticles within immobilized monolayers, surface-assembled superlattices, and free-standing single crystal superlattices through dehydration and subsequent rehydration. Interestingly, DNA contraction upon dehydration occurs in a highly uniform manner, which allows access to spacings as small as 4.6 nm and as much as a 63% contraction in the volume of the lattice. This enables one to deliberately control interparticle spacings over a 4-46 nm range and to preserve solution-phase lattice symmetry in the solid state. This approach could be of use in the study of distance-dependent properties of nanoparticle superlattices and for long-term superlattice preservation.

Original languageEnglish (US)
Pages (from-to)2162-2167
Number of pages6
JournalNano Letters
Volume14
Issue number4
DOIs
StatePublished - Apr 9 2014

Keywords

  • DNA
  • X-ray scattering
  • assembly
  • nanoparticle
  • rehydration
  • superlattice

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanical Engineering

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