Binary Superlattice Design by Controlling DNA-Mediated Interactions
| Autor: | Mark Snyder, Jeetain Mittal, Hasan Zerze, Yajun Ding, Minseok Song |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Superlattice FOS: Physical sciences Structural diversity Binary number Nanotechnology 02 engineering and technology Condensed Matter - Soft Condensed Matter 010402 general chemistry 01 natural sciences Square (algebra) Electrochemistry General Materials Science Particle Size Spectroscopy Condensed Matter - Materials Science Molecular Structure Hexagonal crystal system Materials Science (cond-mat.mtrl-sci) Surfaces and Interfaces DNA 021001 nanoscience & nanotechnology Condensed Matter Physics Silicon Dioxide 0104 chemical sciences Chemical physics Soft Condensed Matter (cond-mat.soft) Particle Thermodynamics Particle size 0210 nano-technology |
| Zdroj: | Langmuir : the ACS journal of surfaces and colloids. 34(3) |
| ISSN: | 1520-5827 |
| Popis: | Most binary superlattices created using DNA functionalization or other approaches rely on particle size differences to achieve compositional order and structural diversity. Here we study two-dimensional (2D) assembly of DNA-functionalized micron-sized particles (DFPs), and employ a strategy that leverages the tunable disparity in interparticle interactions, and thus enthalpic driving forces, to open new avenues for design of binary superlattices that do not rely on the ability to tune particle size (i.e., entropic driving forces). Our strategy employs tailored blends of complementary strands of ssDNA to control interparticle interactions between micron-sized silica particles in a binary mixture to create compositionally diverse 2D lattices. We show that the particle arrangement can be further controlled by changing the stoichiometry of the binary mixture in certain cases. With this approach, we demonstrate the abil- ity to program the particle assembly into square, pentagonal, and hexagonal lattices. In addition, different particle types can be compositionally ordered in square checkerboard and hexagonal - alternating string, honeycomb, and Kagome arrangements. 4 figures in the main text. 5 figures in the supplementary information |
| Databáze: | OpenAIRE |
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