Controlling the Shape of Evaporating Droplets by Ionic Strength: Formation of Highly Anisometric Silica Supraparticles1. Issue 2 (25th November 2013)

• Record Type: Journal Article
• Authors: Sperling, Marcel; Velev, Orlin D.; Gradzielski, Michael
• Is Part Of: Angewandte Chemie international edition. Volume 53:Issue 2(2014)
• Page Start: 586
• Page End: 590
• Publication Date: 2013-11-25
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201307401
• Languages: English
• ISSNs: 1433-7851

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Anisometric silica supraparticles are produced by a simple process of evaporation of sessile droplets containing fumed silica deposited on a superhydrophobic substrate. The shape of the supraparticles is directly controlled by the salt (NaCl) concentration, becoming anisometric beyond a threshold concentration, as quantified by light microscopy. This process is easily extended to supraparticles containing further functional colloidal components.</p> </abstract>