期刊
SCIENCE
卷 352, 期 6293, 页码 1565-1569出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aaf8402
关键词
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资金
- GlaxoSmithKline
- Air Force Office of Scientific Research [FA9550-12-1-0141]
- Asian Office of Aerospace RD [FA2386-13-1-4124]
- Ryan Fellowship
- Northwestern University International Institute for Nanotechnology
- Materials Research Science and Engineering Center of Northwestern University [NSF DMR-1121262]
- Air Force Research Laboratory
- National Science Foundation under the Ceramics program
- U.S. Department of Defense through the National Defense Science & Engineering Graduate Fellowship Program
- Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource [NSF NNCI-1542205]
Multimetallic nanoparticles are useful in many fields, yet there are no effective strategies for synthesizing libraries of such structures, in which architectures can be explored in a systematic and site-specific manner. The absence of these capabilities precludes the possibility of comprehensively exploring such systems. We present systematic studies of individual polyelemental particle systems, in which composition and size can be independently controlled and structure formation (alloy versus phase-separated state) can be understood. We made libraries consisting of every combination of five metallic elements (Au, Ag, Co, Cu, and Ni) through polymer nanoreactor-mediated synthesis. Important insight into the factors that lead to alloy formation and phase segregation at the nanoscale were obtained, and routes to libraries of nanostructures that cannot be made by conventional methods were developed.
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