Co-assembly method and co-assembled structures made thereby

Details Co-assembly method and co-assembled structures made thereby Co-assembly method and co-assembled structures made thereby

C - Chemistry, Metallurgy

09

K

C09K 15/00 (2006.01) B82Y 30/00 (2011.01)

Patent

CA 2755437

A co-assembly method includes, in an aqueous polyelectrolyte composition comprising: (a) a first polyelectrolyte dispersed in the composition and having a net electric charge of a first polarity, (b)a second polyelectrolyte dispersed in the composition and having a net electric charge of a second polarity, wherein the second polarity is opposite the first polarity, and (c)an electrolyte dissolved in the composition in a concentration effective to prevent co-assembly of the polyelectrolytes, the step of allowing co- assembly of the polyelectrolytes by: (1) decreasing the concentration of the electrolyte, or (2) forming an interface between the aqueous polyelectrolyte composition and a surface of a solid substrate or of a second liquid phase, wherein the surface has an affinity for at least one of the polyelectrolytes, or (3) decreasing the concentration of the electrolyte and forming such an interface.

L'invention porte sur un procédé de co-assemblage qui comprend, dans une composition aqueuse de polyélectrolytes comprenant: (a) un premier polyélectrolyte dispersé dans la composition et ayant une charge électrique nette d'une première polarité, (b) un second polyélectrolyte dispersé dans la composition et ayant une charge électrique nette d'une seconde polarité, la seconde polarité étant opposée à la première polarité, et (c) un électrolyte dissous dans la composition suivant une concentration efficace pour empêcher un co-assemblage des polyélectrolytes; l'étape consistant à permettre un co-assemblage des polyélectrolytes par : (1) diminution de la concentration de l'électrolyte, ou (2) formation d'une interface entre la composition aqueuse de polyélectrolytes et une surface d'un substrat solide ou d'une seconde phase liquide, la surface ayant une affinité pour au moins l'un des polyélectrolytes, ou (3) diminution de la concentration de l'électrolyte et formation d'une telle interface.

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