Magnetic field-induced self-assembly of iron oxide nanocubes

Gurvinder Singh, Henry Chan, T. Udayabhaskararao, Elijah Gelman, Davide Peddis, Artem Baskin, Gregory Leitus, Petr Král, Rafal Klajn

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)


Self-assembly of inorganic nanoparticles has been studied extensively for particles having different sizes and compositions. However, relatively little attention has been devoted to how the shape and surface chemistry of magnetic nanoparticles affects their self-assembly properties. Here, we undertook a combined experiment-theory study aimed at better understanding of the self-assembly of cubic magnetite (Fe3O4) particles. We demonstrated that, depending on the experimental parameters, such as the direction of the magnetic field and nanoparticle density, a variety of superstructures can be obtained, including one-dimensional filaments and helices, as well as C-shaped assemblies described here for the first time. Furthermore, we functionalized the surfaces of the magnetic nanocubes with light-sensitive ligands. Using these modified nanoparticles, we were able to achieve orthogonal control of self-assembly using a magnetic field and light.

Original languageEnglish
Pages (from-to)403-421
Number of pages19
JournalFaraday Discussions
Publication statusPublished - Jan 1 2015

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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