A Directional Entropic Force Approach to Assemble Anisotropic Nanoparticles into Superlattices

A Directional Entropic Force Approach to Assemble Anisotropic Nanoparticles into Superlattices

Not touching but sticking: By using cationic surfactant micelles as depletants, a directional entropic force approach (DEFA) assembles anisotropic nanoparticles into superlattices in solution. The micelles induce the face‐to‐face stacking of the nanoparticles to maximize the system's entropy. T...

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Veröffentlicht in:Angew. Chem. Int. Ed 2013-12, Vol.52 (52), p.13980-13984
Hauptverfasser: Young, Kaylie L., Personick, Michelle L., Engel, Michael, Damasceno, Pablo F., Barnaby, Stacey N., Bleher, Reiner, Li, Tao, Glotzer, Sharon C., Lee, Byeongdu, Mirkin, Chad A.
Format: Artikel
Sprache:eng
Schlagworte:
Anisotropy
catalysis (homogeneous), solar (photovoltaic), bio-inspired, charge transport, mesostructured materials, materials and chemistry by design, synthesis (novel materials), synthesis (self-assembly)
Cationic
Charging
depletion forces
entropy
Micelles
nanomaterials
Nanoparticles
Stacking
Superlattices
Surfactants
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Zusammenfassung:Not touching but sticking: By using cationic surfactant micelles as depletants, a directional entropic force approach (DEFA) assembles anisotropic nanoparticles into superlattices in solution. The micelles induce the face‐to‐face stacking of the nanoparticles to maximize the system's entropy. The shape of the nanoparticles determines the symmetry of the superlattice, the interparticle spacing is determined by the charged surfactant.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201306009