TY - JOUR
T1 - Emulsion Droplets Stabilized by Close-Packed Janus Regular Polygonal Particles
AU - Koike, Ryotaro
AU - Iwashita, Yasutaka
AU - Kimura, Yasuyuki
N1 - Funding Information:
The authors gratefully thank Prof. Clemens Bechinger and Dr. Felix Kümmel for the particle preparation method and Assoc. Prof. Yusuke Maeda for the photolithography setup and fruitful discussions. Y.I. gratefully acknowledges support from JSPS KAKENHI (grant no. 16K14463). The authors thank the Edanz Group (www.edanzediting.com/ac) for editing a draft of this manuscript.
Publisher Copyright:
© 2018 American Chemical Society.
PY - 2018/10/16
Y1 - 2018/10/16
N2 - In Pickering-Ramsden emulsions, the packing structure of the colloidal particles at the liquid-liquid (or liquid-gas) interface significantly affects the structure and behavior of the emulsion. Here, using a series of platelike particles with regular polygonal shapes and Janus amphiphilicity, we created emulsion droplets stabilized by close-packed polygonal particles at the interface. The systematic variation of the particle morphology shows that the geometrical features of the regular polygons in (curved) planar packing dominate over the self-assembled structures. The structures are tessellations of triangular, square, and hexagonal particles at the surface for large droplets and regular tetrahedral, cubic, and dodecahedral particle shells of triangular, square, and pentagonal particles for small droplets, respectively. This work creates the possibility of geometrically designing the structure and functionality of emulsions.
AB - In Pickering-Ramsden emulsions, the packing structure of the colloidal particles at the liquid-liquid (or liquid-gas) interface significantly affects the structure and behavior of the emulsion. Here, using a series of platelike particles with regular polygonal shapes and Janus amphiphilicity, we created emulsion droplets stabilized by close-packed polygonal particles at the interface. The systematic variation of the particle morphology shows that the geometrical features of the regular polygons in (curved) planar packing dominate over the self-assembled structures. The structures are tessellations of triangular, square, and hexagonal particles at the surface for large droplets and regular tetrahedral, cubic, and dodecahedral particle shells of triangular, square, and pentagonal particles for small droplets, respectively. This work creates the possibility of geometrically designing the structure and functionality of emulsions.
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U2 - 10.1021/acs.langmuir.8b02323
DO - 10.1021/acs.langmuir.8b02323
M3 - Article
C2 - 30230339
AN - SCOPUS:85054413008
VL - 34
SP - 12394
EP - 12400
JO - Langmuir
JF - Langmuir
SN - 0743-7463
IS - 41
ER -