Loget G., Kuhn A.,
J. Mater. Chem. 2012, 22, 15457-15474. Feature article

This review article highlights the most recent advances with respect to the preparation of Janus objects by bulk phase processes. Historically most of the concepts developed for generating asymmetric particles have been based on the use of interfaces or surfaces, which are necessary to break the symmetry. This restricts in many cases the amount of produced particles, due to the two-dimensional nature of the approaches. Therefore the bulk synthesis of such asymmetric micro- and nanoobjects is of primary importance for their production at an industrial scale and helps to open up the field to commercial applications. We summarize here the different alternative concepts, spanning a wide range from sophisticated polymer chemistry to the use of external electromagnetic fields, that have been proposed in recent years in order to break the symmetry in true bulk processes.

 

JMaterChem2012 p15457 TOC

 

Thumbnail Loget G., Roche J., Gianessi E., Bouffier L., Kuhn A.,J. Am. Chem.Soc. 2012, 134, 20033-20036. Based on the principles of bipolar electrochemistry, localized pH gradients are generated at the surface...
Thumbnail Sentic M., Loget G., Manojlovic D., Kuhn A., Sojic N.,Angew. Chem. Int. Ed. 2012, 51, 11284–11288. Swimmer in the dark: Propulsion of a conducting object is intrinsically coupled with light...
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Thumbnail Loget G., Roche J., Kuhn A.,Adv. Mater. 2012, 24, 5111-5116. Cover article Janus particles have different features/chemistry on two opposite sides (see figure). So far, they have been obtained...
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Thumbnail Loget G., Kuhn A.,J. Mater. Chem. 2012, 22, 15457-15474. Feature article This review article highlights the most recent advances with respect to the preparation of Janus objects by bulk phase...
Thumbnail Loget G., Kuhn A.,Lab on a Chip 2012, 12, 1967-1971. Hot Paper, Cover Article We report for the first time the vertical propulsion of conducting beads in liquid filled capillaries by bipolar...
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