Journal
SMALL
Volume 12, Issue 4, Pages 499-505Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201502768
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Funding
- NSF Career Award [DMR-1255377]
- 3M Nontenured Faculty Award
- University of Maryland
- National Basic Research Program of China [2012CB821500]
- NSFC [51173056, 91127046, 51525302]
- Maryland NanoCenter
- NispLab
- NSF as a MRSEC Shared Experimental Facilities
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This article describes a novel supramolecular assembly-mediated strategy for the organization of Au nanoparticles (NPs) with different shapes (e. g., spheres, rods, and cubes) into large-area, free-standing 2D and 3D superlattices. This robust approach involves two major steps: (i) the organization of polymer-tethered NPs within the assemblies of supramolecular comblike block copolymers (CBCPs), and (ii) the disassembly of the assembled CBCP structures to produce free-standing NP superlattices. It is demonstrated that the crystal structures and lattice constants of the superlattices can be readily tailored by varying the molecular weight of tethered polymers, the volume fraction of NPs, and the matrix of CBCPs. This template-free approach may open a new avenue for the assembly of NPs into 2D and 3D structures with a wide range of potential applications.
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