Faraday Discussions 2015-01-01

Synthesis of multivalent silica nanoparticles combining both enthalpic and entropic patchiness.

Céline Hubert, Cyril Chomette, Anthony Désert, Ming Sun, Mona Treguer-Delapierre, Stéphane Mornet, Adeline Perro, Etienne Duguet, Serge Ravaine

文献索引：Faraday Discuss. 181 , 139-46, (2015)

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摘要

Silica particles with a controlled number of entropic patches, i.e. dimples, are synthesized through the growth of the silica core of binary multipods that have been produced by a seeded-growth emulsion polymerization reaction. Transmission electron microscopy studies indicate that the silica surface conforms to the shape of the polystyrene (PS) nodules of the multipods while growing, allowing good control of the final shape of the dimpled silica particles. The PS nodules are also used as protecting masks to regioselectively graft amino groups, as revealed by the adsorption of gold markers. After dissolution of the PS nodules, some polymer chains remain grafted onto the silica surface, forming organic bumps. These residues are also selectively functionalized, leading to silica particles with both entropic and enthalpic patches.

相关化合物

  • 氯仿
  • 乙醇
  • 乙二胺
  • 盐酸
  • 十二烷基硫酸钠
  • 四氢呋喃
  • N-(beta-氨乙基)-ga...
  • 丙基三乙氧基硅烷
  • N,N-二甲基甲酰胺
  • 四氯化锡

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