Nanocrystalline Janus films of inorganic materials prepared at the liquid-liquid interface

Biswas, Kanishka ; Rao, C. N. R. (2009) Nanocrystalline Janus films of inorganic materials prepared at the liquid-liquid interface Journal of Colloid and Interface Science, 333 (1). pp. 404-410. ISSN 0021-9797

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00219...

Related URL: http://dx.doi.org/10.1016/j.jcis.2009.01.060

Abstract

The interface between toluene and water has been employed to prepare ultrathin Janus nanocrystalline films of metal oxides, metal chalcogenides and gold, wherein the surface on the organic-side is hydrophobic and the aqueous-side is hydrophilic. We have changed the nature of the metal precursor or capping agent in the organic layer to increase the hydrophobicity. The strategy employed for this purpose is to increase the length of the alkane chain in the precursor or use a perfluroalkane derivative as precursor or as a capping agent. The hydrophobicity and hydrophilicity of the Janus films have been determined by contact angle measurements. The morphology of hydrophobic and hydrophilic sides of the film have been examined by field emission scanning electron microscopy.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Janus Films; Hydrophobic; Hydrophilic; Organic-aqueous Interface
ID Code:42279
Deposited On:02 Jun 2011 10:18
Last Modified:02 Jun 2011 10:18

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