Fabrication of Large-Area Two-Dimensional Colloidal Crystals

Nanoparticle coating: A suspension of colloidal particles in a water/propanol solution was layered onto a water surface, where the particles self‐assembled into ordered two‐dimensional hexagonal crystal arrays (>280 cm2) within two minutes. These arrays were transferred from the water surface to...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2012-06, Vol.51 (25), p.6117-6120
Main Authors: Zhang, Jian-Tao, Wang, Luling, Lamont, Daniel N., Velankar, Sachin S., Asher, Sanford A.
Format: Article
Language:English
Subjects:
Arrays
Coating
Colloids
Crystals
gels
Hydrogels
nanoparticles
Nanostructure
polymers
sensors
Two dimensional
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Summary:Nanoparticle coating: A suspension of colloidal particles in a water/propanol solution was layered onto a water surface, where the particles self‐assembled into ordered two‐dimensional hexagonal crystal arrays (>280 cm2) within two minutes. These arrays were transferred from the water surface to other substrates (see picture) and embedded in a chitosan hydrogel for visual detection of the pH value.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201105439