Electric-Field-Induced Lock-and-Key Interactions between Colloidal Spheres and Bowls
| Autor: | Kamp, Marlous, Elbers, Nina A., Troppenz, Thomas, Imhof, Arnout, Dijkstra, Marjolein, Van Roij, René, Van Blaaderen, Alfons, Sub Soft Condensed Matter, Debye Institute, Sub Algemeen Theoretical Physics, Sub Cond-Matter Theory, Stat & Comp Phys, Soft Condensed Matter and Biophysics |
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| Přispěvatelé: | Sub Soft Condensed Matter, Debye Institute, Sub Algemeen Theoretical Physics, Sub Cond-Matter Theory, Stat & Comp Phys, Soft Condensed Matter and Biophysics |
| Rok vydání: | 2016 |
| Předmět: |
Solid-state chemistry
Materials science Chemistry(all) Field (physics) General Chemical Engineering Composite number Nanotechnology 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Colloid Electric field Taverne Path (graph theory) Chemical Engineering(all) Materials Chemistry Particle SPHERES 0210 nano-technology |
| Zdroj: | Chemistry of Materials, 28(4), 1040. American Chemical Society |
| ISSN: | 1520-5002 0897-4756 |
| DOI: | 10.1021/acs.chemmater.5b04152 |
| Popis: | To realize new and directed self-assembly (SA) pathways, the focus in colloid science and nanoscience has shifted from spherical particles and interactions to increasingly more complex shapes and interparticle potentials. This field is fueled by recent breakthroughs in particle synthesis, such as particles with complementary shapes that allow for specific lock-and-key interactions induced by depletants. Here, we show that electric fields form an alternative route for directing the SA of convex and concave colloids, with the additional advantage that the system now becomes switchable by external conditions. Both experimental and theoretical results are presented that validate the electric-field-induced assembly mechanism and show that even irreversibly bound composites can be generated by tuning the force balance. The successful isolation of the irreversible composite particles, in combination with generalization to different materials, shows that the current mechanism provides a versatile new path not only toward complex-particle synthesis but also toward directed self-assembly. |
| Databáze: | OpenAIRE |
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