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Journal of Nanotechnology
Volume 2009, Article ID 709748, 8 pages
Research Article

Ultrahydrophobicity of Polydimethylsiloxanes-Based Multilayered Thin Films

1Department of Chemistry, Yili Normal University, Yili, Xinjiang 835000, China
2Department of Chemistry, Drexel University, Philadelphia, PA 19104, USA
3Technical Institute for Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China

Received 23 August 2008; Accepted 11 November 2008

Academic Editor: Thomas Thundat

Copyright © 2009 Hongyan Gao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The formation of polydimethylsiloxanes (PDMSs)-based layer-by-layer multilayer ultrathin films on charged surfaces prepared from water and phosphate buffer solutions has been investigated. The multilayer films prepared under these conditions showed different surface roughness. Nanoscale islands and network structures were observed homogeneously on the multilayer film prepared from pure water solutions, which is attributing to the ultrahydrobic property of the multilayer film. The formation of nanoscale islands and network structures was due to the aggregation of PDMS-based polyelectrolytes in water. This work provides a facile approach for generating ultrahydrophobic thin films on any charged surfaces by PDMS polyelectrolytes.