Journal
NANO LETTERS
Volume 14, Issue 4, Pages 2071-2078Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl500236b
Keywords
Tethered nanoparticles; self-assembly; DNA nanotechnology; block copolymer; gyroid
Categories
Funding
- U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-FG02-02ER46000]
- U.S. Department of Energy Computational Science Graduate Fellowship
- U.S. Department of Energy, Office of Science [DE-AC02-06CH11357]
- Office of the Director through the Named Postdoctoral Fellowship Program (Aneesur Rahman Postdoctoral Fellowship), Argonne National Laboratory
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Motivated by growing interest in the self-assembly of nanoparticles for applications such as photonics, organic photovoltaics, and DNA-assisted designer crystals, we explore the phase behavior of tethered spherical nanoparticles. Here, a polymer tether is used to geometrically constrain a pair of nanoparticles creating a tethered nanoparticle telechelic. Using simulation, we examine how varying architectural features, such as the size ratio of the two end-group nanospheres and the length of the flexible tether, affects the self-assembled morphologies. We demonstrate not only that this hybrid building block maintains the same phase diversity as linear triblock copolymers, allowing for a variety of nanoparticle materials to replace polymer blocks, but also that new structures not previously reported are accessible. Our findings imply a robust underlying ordering mechanism is common among these systems, thus allowing flexibility in synthesis approaches to achieve a target morphology.
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