Topotactic interconversion of nanoparticle superlattices

Robert J. Macfarlane, Matthew R. Jones, Byeongdu Lee, Evelyn Auyeung, Chad A. Mirkin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

106 Scopus citations

Abstract

The directed assembly of nanoparticle building blocks is a promising method for generating sophisticated three-dimensional materials by design. In this work, we have used DNA linkers to synthesize nanoparticle superlattices that have greater complexity than simple binary systems using the process of topotactic intercalation - the insertion of a third nanoparticle component at predetermined sites within a preformed binary lattice. Five distinct crystals were synthesized with this methodology, three of which have no equivalent in atomic or molecular crystals, demonstrating a general approach for assembling highly ordered ternary nanoparticle superlattices whose structures can be predicted before their synthesis. Additionally, the intercalation process was demonstrated to be completely reversible; the inserted nanoparticles could be expelled into solution by raising the temperature, and the ternary superlattice could be recovered by cooling.

Original languageEnglish (US)
Pages (from-to)1222-1225
Number of pages4
JournalScience
Volume341
Issue number6151
DOIs
StatePublished - 2013

ASJC Scopus subject areas

  • General

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