Shape control from thermodynamic growth conditions: the case of hcp ruthenium hourglass nanocrystals

John Watt, Chenlong Yu, Lan-Yun Chang, Soshan Cheong, Richard David Tilley

Research output: Contribution to journalArticleResearchpeer-review

50 Citations (Scopus)


Recent successes in forming different shaped face centered cubic (fcc) metal nanostructures has enabled a greater understanding of nanocrystal growth mechanisms. Here we extend this understanding to the synthesis of hexagonally close packed (hcp) metal nanostructures, to form uniquely faceted ruthenium nanocrystals with a well-defined hourglass shape. The hourglass nanocrystals are formed in a three-step thermodynamic growth process with dodecylamine as the organic stabilizer. The hourglass nanocrystals are then shown to readily self-assemble to form a new type of nanocrystal superlattice.
Original languageEnglish
Pages (from-to)606 - 609
Number of pages4
JournalJournal of the American Chemical Society
Issue number2
Publication statusPublished - 2013

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