Anisotropic Micro- and Nano-Capsules

作者：Shchepelina Olga; Kozlovskaya Veronika; Kharlampieva Eugenia; Mao Wenbin; Alexeev Alexander^*; Tsukruk Vladimir V

来源：Macromolecular Rapid Communications, 2010, 31(23): 2041-2046.

DOI：10.1002/marc.201000490

• anisotropic microcapsules
• hydrogen-bonded shells
• LbL assembly
• simulations
• thin films

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 pK(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.

• 出版日期2010-12-1