The synthesis and organization of nanoparticles has generated considerable interest as an approach to prepare novel nanomaterials. Magnetic assembly of dipolar colloids is an intriguing strategy for “bottom-up” materials synthesis, as the directionality of magnetic dipoles enables selective one-dimensional (1-D) organization of ferromagnetic nanoparticles. This phenomenon has been harnessed in the preparation of 1-D materials from iron-oxide loaded latex particles, or emulsion droplets, similar approaches using nanoscale building blocks, but remains a difficult challenge. Ferromagnetic nanoparticle organization into chains and rings has been observed both on surfaces and in solution in the lieterature. We report a novel methodology to functionalize and assemble ferromagnetic colloids into micron-sized chain templates and examine the formation of 1-D carbon mesostructures deposited as a solid and in solution phase (Scheme 1).
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