Two dimension assembly of amphiphilic molecules in aqueous solution is changing and intriguing topic as it is nomally thermodynamically unfavorable. Most of 2D assemblies of amhiphiles occur at solid/liquid, liquid/air or liquid/liquid interfaces. Few examples of preparing free-standing amphiphilic 2D materials in solution require specially designed building blocks and lack of size and geometry control. Here we provide an approach for the 2D amphiphilic assemblies into mono-disperse, size and shape defined nanosheets in aqueous solution which doesn't rely on any interface.<br/>Through frame guided assembly strategy and using DNA origami as the frame, mono-dispersed and shape defined nanosheets are prepared. By adjusting the distribution of the anchoring DNA strands, we can easily control the size and shape of the assemblies precisely. Based on this approach, 2 kinds of amphiphilic molecules are applied, homogeneous and hetrogeneous nanosheets have been successfully achieved. We demonstrate this is a general strategy to guide diverse amphiphiles form homogeneous/hetrogeneous 2D assemblies.

Precisely controlled 2D free-floating nanosheets of amphiphilic molecules through frame-guided assembly

254th National Meeting (2017)

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