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Two-Stage Assembly of Nanoparticle Superlattices with Multiscale Organization

Journal Article · · Nano Letters
Self-assembly processes, while promising for enabling the fabrication of complexly organized nanomaterials from nanoparticles, are often limited in creating structures with multiscale order. These limitations are due to difficulties in practically realizing the assembly processes required to achieve such complex organizations. For a long time, a hierarchical assembly attracted interest as a potentially powerful approach. However, due to the experimental limitations, intermediate-level structures are often heterogeneous in composition and structure, which significantly impacts the formation of large-scale organizations. Here, we introduce a two-stage assembly strategy: DNA origami frames scaffold a coordination of nanoparticles into designed 3D nanoclusters, and then these clusters are assembled into ordered lattices whose types are determined by the clusters’ valence. Through modulating the nanocluster architectures and intercluster bindings, we demonstrate the successful formation of complexly organized nanoparticle crystals. To conclude, the presented two-stage assembly method provides a powerful fabrication strategy for creating nanoparticle superlattices with prescribed unit cells.
Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
China National Postdoctoral Program for Innovative Talents; Fundamental Research Funds for the Central Universities; National Natural Science Foundation of China (NSFC); Shenzhen International Cooperation Research Project; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0008772; SC0012704
OSTI ID:
1890435
Report Number(s):
BNL-223528-2022-JAAM
Journal Information:
Nano Letters, Journal Name: Nano Letters Journal Issue: 9 Vol. 22; ISSN 1530-6984
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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