Amphiphilic Crescent-Moon-Shaped Microparticles Formed by Selective Adsorption of Colloids

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Original Entry by Andrew Capulli, AP225 Fall 2011

Reference

"Amphiphilic Crescent-Moon-Shaped Microparticles Formed by Selective Adsorption of Colloids" S.-H. Kim, A. Abbaspourrad, and D. A. Weitz. Journal of the American Chemical Society 133(14), 5516-5524 (2011).

Introduction: Motivation

There are numerous amphiphilic surfactant molecules available in a wide variety of hydrophilic-hydrophobic balances, shapes, sizes etc as pointed out by the authors. However, as amphiphilic microparticles have become of interest due to their potential use as pigments in display devices and as mentioned by the authors, microparticles can be used as the "building blocks to construct photonic structures through directional interactions." However, surfactant microparticles are of particular interest due to their amphiphilic nature and potential for added increased strength of emulsion. While the authors note that the science behind the creation of such amphiphilic particles is not necessarily novel in this research, the field itself is new and like how their are numerous tunable molecular surfactants (in particular numerous shapes) there is a need in the mircoparticle field for such shape diversity and study into the effects thereof. Dumbbell, mushroom, and spherical shaped amphiphilic microparticles have been studied but there is a need to investigate more and in this methods paper the authors do just that, presenting a new way to form "crescent" (half moon shelled) shaped amphiphilic microparticles.

Summary of Main Experimentation

Connection to Soft Matter

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