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Gels 2017, 3(2), 15; doi:10.3390/gels3020015

Droplets, Evaporation and a Superhydrophobic Surface: Simple Tools for Guiding Colloidal Particles into Complex Materials

Stranski Laboratorium für Physikalische & Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 124, Sekr. TC7, D-10623 Berlin, Germany
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Academic Editor: Clemens K. Weiss
Received: 29 December 2016 / Revised: 9 April 2017 / Accepted: 13 April 2017 / Published: 4 May 2017
(This article belongs to the Special Issue Colloid Chemistry)

Abstract

The formation of complexly structured and shaped supraparticles can be achieved by evaporation-induced self-assembly (EISA) starting from colloidal dispersions deposited on a solid surface; often a superhydrophobic one. This versatile and interesting approach allows for generating rather complex particles with corresponding functionality in a simple and scalable fashion. The versatility is based on the aspect that basically one can employ an endless number of combinations of components in the colloidal starting solution. In addition, the structure and properties of the prepared supraparticles may be modified by appropriately controlling the evaporation process, e.g., by external parameters. In this review, we focus on controlling the shape and internal structure of such supraparticles, as well as imparted functionalities, which for instance could be catalytic, optical or electronic properties. The catalytic properties can also result in self-propelling (supra-)particles. Quite a number of experimental investigations have been performed in this field, which are compared in this review and systematically explained. View Full-Text
Keywords: superhydrophobic surfaces; droplets; nanoparticles; evaporation; self-assembly; self-propelling; anisometric; colloids; supraparticles; functional materials; catalysis superhydrophobic surfaces; droplets; nanoparticles; evaporation; self-assembly; self-propelling; anisometric; colloids; supraparticles; functional materials; catalysis
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Sperling, M.; Gradzielski, M. Droplets, Evaporation and a Superhydrophobic Surface: Simple Tools for Guiding Colloidal Particles into Complex Materials. Gels 2017, 3, 15.

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