Non-Brownian Particle-Based Materials with Microscale and Nanoscale Hierarchy

Colloidal crystals are interesting materials owing to their customizable photonic properties, high surface area, and analogy to chemical structures. The flexibility of these materials has been greatly enhanced through mixing particles with varying sizes, compositions, and surface charges. In this wa...

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Bibliographic Details
Published in:Angewandte Chemie 2015-05, Vol.127 (20), p.5952-5956
Main Authors: Lash, Melissa H., Jordan, Jahnelle C., Blevins, Laura C., Fedorchak, Morgan V., Little, Steven R., McCarthy, Joseph J.
Format: Article
Language:eng ; ger
Subjects:
Analogies
Assembly
Atoms & subatomic particles
Chemistry
Crystal structure
Customizing
Flexibility
Hierarchies
Kolloidkristalle
Mehrkomponentenkristalle
Mikropartikel
Nanostructure
Nanostrukturen
Selbstorganisation
Stoichiometry
Surface area
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Summary:Colloidal crystals are interesting materials owing to their customizable photonic properties, high surface area, and analogy to chemical structures. The flexibility of these materials has been greatly enhanced through mixing particles with varying sizes, compositions, and surface charges. In this way, distinctive patterns or analogies to chemical stoichiometries are produced; however, to date, this body of research is limited to particles with nanoscale dimensions. A simple method is now presented for bottom‐up assembly of non‐Brownian particle mixtures to create a new class of hierarchically‐ordered materials that mimic those found in nature (both in pore distribution as well as stoichiometry). Additionally, these crystals serve as a template to create particle‐based inverted crystalline structures with customizable properties. Nicht‐Brownsche Mikropartikelmischungen bilden einzigartige Mehrkomponenten‐Kolloidkristalle und inverse Strukturen. Durch Nachahmen des Effekts der Brownschen Bewegung unter Rühren sowie durch Einstellen von Größe und Volumenverhältnis der Partikel wurden stöchiometrische Muster erzeugt, die analog zu selbständig gebildeten Nanostrukturen sind.
ISSN:0044-8249
1521-3757
DOI:10.1002/ange.201500273