(704i) Self-Assembly of Multi-Flavored DNA-Functionalized Particles into Binary Superlattices

Zerze, H., Lehigh University
Mahynski, N. A., National Institute of Standards and Technology
Pretti, E., Lehigh University
Shen, V. K., National Institute of Standards and Technology
Mittal, J., Lehigh University
DNA base-pairing can be exploited to induce programmable interactions between colloidal particles via anchoring of complementary DNA-strands on their surface. This allows one to design colloidal systems which can crystallize into a variety of superlattice structures. A common strategy has been to functionalize two particle types by complementary DNA strands so that the same particle types are repulsive whereas the opposite particles are attractive. A more recent scheme, so-called multiflavoring, is to blend complementary DNA strands on the same particle to achieve systems in which like-particles also attract each other. In this work, we show that control over interparticle interactions in such systems can allow control over the resulting binary crystal structures in a way that is not feasible by other methods.