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Control over the Wettability of Colloidal Crystal Films by Assembly Temperature

✍ Scribed by Jingxia Wang; Yongqiang Wen; Xinjian Feng; Yanlin Song; Lei Jiang

Publisher: John Wiley and Sons
Year: 2006
Tongue: English
Weight: 214 KB
Volume: 27
Category: Article
ISSN: 1022-1336
DOI: 10.1002/marc.200500719

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✦ Synopsis

Abstract

Summary: A facile method to fabricate colloidal crystal films with tunable wettability from an amphiphilic material polystyrene‐block‐poly(methyl methacrylate)‐block‐poly(acrylic acid) is presented. The wettability of the film can be tuned from superhydrophilic (CA, 0°) to superhydrophobic (CA, 150.2°) by varying the assembly temperature, while the position of the photonic bandgap of the colloidal crystal films remains virtually unchanged. The method could open new application fields of colloidal crystals in diverse environments.

The relationship of assembly temperature with water CA (inset is the water droplet profile of the relative water CA).

imageThe relationship of assembly temperature with water CA (inset is the water droplet profile of the relative water CA).

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