Binary Colloidal Crystals Fabricated with a Horizontal Deposition Method

Wang, Likui, Wan, Yong, Li, Yanqiang, Cai, Zhongyu, Li, Hong-Liang, Zhao, X. S. and Li, Qin (2009) Binary Colloidal Crystals Fabricated with a Horizontal Deposition Method. Langmuir, 25 12: 6753-6759. doi:10.1021/la9002737

Author Wang, Likui
Wan, Yong
Li, Yanqiang
Cai, Zhongyu
Li, Hong-Liang
Zhao, X. S.
Li, Qin
Title Binary Colloidal Crystals Fabricated with a Horizontal Deposition Method
Journal name Langmuir   Check publisher's open access policy
ISSN 0743-7463
Publication date 2009-06
Sub-type Article (original research)
DOI 10.1021/la9002737
Volume 25
Issue 12
Start page 6753
End page 6759
Total pages 7
Place of publication Washington, D.C, U.S.
Publisher American Chemical Society
Language eng
Formatted abstract
We describe the use of a horizontal deposition method to prepare large-area binary colloidal crystals (bCCs). Two different sets of binary polystyrene spheres were employed to demonstrate the validity of this method. By varying the number ratios of small spheres with respect to large spheres, the stoichiometric configuration of the bCCs can be altered. Stable corresponding replica structures of the bCCs were also prepared, and the cross-sectional images of the binary inverse opals were obtained. Optical characterization demonstrated the presence of pseudostop bands, which were in agreement with the compositions of the material. The formation of the bCC by such a simple self-assembly method was attributed to the cooperative effect of interparticle electrostatic interactions and geometrical constrictions. This facile fabrication method further enhances the application potential of the bCCs and their inverse porous replicas with a binary pore system in the fields of photonics, solar cells, separations, catalysis, and biosensing. © 2009 American Chemical Society.
Keyword Hard-Sphere Colloids
Visible Region
Inverse Opals
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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