Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.colsurfa.2010.01.029
Title: High yield shape control of monodispersed Au nanostructures with 3D self-assembly ordering
Authors: Hu, W.
Wiria
Ong, W.L.
Ho, G.W. 
Keywords: Adsorption
Crystal morphology
Nanomaterials
Nanostructure
Surfaces
X-ray diffraction
Issue Date: 5-Apr-2010
Source: Hu, W.,Wiria,Ong, W.L.,Ho, G.W. (2010-04-05). High yield shape control of monodispersed Au nanostructures with 3D self-assembly ordering. Colloids and Surfaces A: Physicochemical and Engineering Aspects 358 (1-3) : 108-114. ScholarBank@NUS Repository. https://doi.org/10.1016/j.colsurfa.2010.01.029
Abstract: High purity Au nanoparticles and nanorods have been synthesized using seed-mediated approach in aqueous solution with the presence of cetyltrimethylammonium bromide (CTAB) surfactant. The control of seed concentration and the addition of silver nitrate yield Au nanostructures of high monodispersivity. After obtaining high concentration dispersion of anisotropic monodispersed colloidal nanocrystals, evaporation induced self-assembly of Au nanostructures was carried out. The Au nanocrystals experience strong capillary forces through the surface of the drying solvent which forces them to self-assemble while CTAB assist in drawing the nanocrystals closer without aggregating them and finally homogeneity in the shapes and sizes of the as-synthesized Au nanocrystals facilitate the self-assembly of Au nanostructures into ordered 3D assemblies. Thus, in the preparation of a large-scale assembly, high concentration, surfactant capping and monodispersivity of the Au nanostructures are essential. © 2010 Elsevier B.V. All rights reserved.
Source Title: Colloids and Surfaces A: Physicochemical and Engineering Aspects
URI: http://scholarbank.nus.edu.sg/handle/10635/56195
ISSN: 09277757
DOI: 10.1016/j.colsurfa.2010.01.029
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