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

Biswas, Kanishka and Rao, CNR (2009) Nanocrystalline Janus films of inorganic materials prepared at the liquid-liquid interface. In: Journal Of Colloid And Interface Science, 333 (1). pp. 404-410.

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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:	Journal Article
Publication:	Journal Of Colloid And Interface Science
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	Janus films;Hydrophobic;Hydrophilic;Organic-aqueous interface
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	15 Dec 2009 06:14
Last Modified:	19 Sep 2010 05:30
URI:	http://eprints.iisc.ac.in/id/eprint/19880

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