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Anisotropic Micro‐ and Nano‐Capsules
Author(s) -
Shchepelina Olga,
Kozlovskaya Veronika,
Kharlampieva Eugenia,
Mao Wenbin,
Alexeev Alexander,
Tsukruk Vladimir V.
Publication year - 2010
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201000490
Subject(s) - materials science , anisotropy , tannic acid , nano , polymer , buckling , nanotechnology , nanoscopic scale , tetrahedron , composite material , optics , crystallography , chemistry , physics , organic chemistry
In this work, we introduce anisotropically shaped, ultrathin micro‐ and nano‐capsules fabricated by layer‐by‐layer approach. The original cubic and tetrahedral shapes of the template particles were replicated to produce hollow capsules with well‐defined edges. Introducing tannic acid as a component of LbL shells resulted in enhanced chemical stability of these hollow polymer structures under a wide pH range due to high p K a value. Computational studies demonstrated increased mechanical stability of the anisotropic capsules under osmotic pressure variation due to sharp edges and vertices acting as a reinforcing frame in contrast to spherical microcapsules that undergo random buckling.