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A design path for the hierarchical self-assembly of patchy colloidal particles

Erik Edlund (Institutionen för energi och miljö, Fysisk resursteori ; SuMo Biomaterials) ; Oskar Lindgren (Institutionen för energi och miljö, Fysisk resursteori ; SuMo Biomaterials) ; Martin Nilsson Jacobi (Institutionen för energi och miljö, Fysisk resursteori)
Soft Matter (1744-683X). Vol. 11 (2015), 19, p. 3913-3919.
[Artikel, refereegranskad vetenskaplig]

Patchy colloidal particles are promising candidates for building blocks in directed self-assembly. To be successful the surface patterns need to be simple enough to be synthesized, while feature-rich enough to cause the colloidal particles to self-assemble into desired structures. Achieving this is a challenge for traditional synthesis methods. Recently it has been suggested that surface patterns themselves can be made to self-assemble. In this paper we present a design path for the hierarchical targeted self-assembly of patchy colloidal particles based on self-assembling surface patterns. At the level of the surface structure, we use a predictive method utilizing the universality of stripes and spots, coupled with stoichiometric constraints, to cause highly specific and functional patterns to self-assemble on spherical surfaces. We use a minimalistic model of an alkanethiol on gold as a demonstration, showing that even with limited control over the interaction between surface constituents we can obtain patterns that cause the colloidal particles themselves to self-assemble into various complex geometric structures, such as strings, membranes, cubic aggregates and colloidosomes, as well as various crystalline patterns.



Denna post skapades 2015-06-12. Senast ändrad 2016-03-31.
CPL Pubid: 218295

 

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Institutioner (Chalmers)

Institutionen för energi och miljö, Fysisk resursteori
SuMo Biomaterials

Ämnesområden

Yt- och kolloidkemi

Chalmers infrastruktur