Tunable porous nanoallotropes prepared by post-assembly etching of binary nanoparticle superlattices

Thumu Udayabhaskararao, Thomas Altantzis, Lothar Houben, Marc Coronado-Puchau, Judith Langer, Ronit Popovitz-Biro, Luis M. Liz-Marzán, Lela Vukovic, Petr Král, Sara Bals, Rafal Klajn

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)


Self-assembly of inorganic nanoparticles has been used to prepare hundreds of different colloidal crystals, but almost invariably with the restriction that the particles must be densely packed. Here,we show that non-close-packed nanoparticle arrays can be fabricated through the selective removal of one of two components comprising binary nanoparticle superlattices. First, a variety of binary nanoparticle superlattices were prepared at the liquid-air interface, including several arrangements that were previously unknown. Molecular dynamics simulations revealed the particular role of the liquid in templating the formation of superlattices not achievable through self-assembly in bulk solution. Second, upon stabilization, all of these binary superlattices could be transformed into distinct "nanoallotropes"-nanoporous materials having the same chemical composition but differing in their nanoscale architectures.

Original languageEnglish
Pages (from-to)514-518
Number of pages5
Issue number6362
Publication statusPublished - Oct 27 2017

ASJC Scopus subject areas

  • General

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