期刊
SCIENCE
卷 355, 期 6328, 页码 931-935出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aal3919
关键词
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资金
- Center for Bio-Inspired Energy Science, an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Basic Energy Sciences [DE-SC0000989]
- Air Force Office of Scientific Research [FA9550-11-1-0275, FA9550-12-1-0280]
- China Scholarship Council (CSC) [201306310060]
- Deutsche Forschungsgemeinschaft through the Cluster of Excellence Engineering of Advanced Materials
- Interdisciplinary Center for Functional Particle Systems (FPS) and Central Institute for Scientific Computing (ZISC)
- University of Michigan
- Simons Foundation
- Materials Research Science and Engineering Center program [NSF DMR-1121262]
- International Institute for Nanotechnology (IIN)
- State of Illinois, through the IIN
DNA-programmable assembly has been used to deliberately synthesize hundreds of different colloidal crystals spanning dozens of symmetries, but the complexity of the achieved structures has so far been limited to small unit cells. We assembled DNA-modified triangular bipyramids (similar to 250-nanometer long edge, 177-nanometer short edge) into clathrate architectures. Electron microscopy images revealed that at least three different structures form as large single-domain architectures or as multidomain materials. Ordered assemblies, isostructural to clathrates, were identified with the help of molecular simulations and geometric analysis. These structures are the most sophisticated architectures made via programmable assembly, and their formation can be understood based on the shape of the nanoparticle building blocks and mode of DNA functionalization.
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