Journal article
Architecture Effects in Complex Spherical Assemblies of (AB)(n)-Type Block Copolymers
ACS Macro Letters, v 9(12), pp 1745-1752
01 Nov 2020
PMID: 35653677
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Molecular architecture plays a key role in the self-assembly of block copolymers, but few studies have systematically examined the influence of chain connectivity on tetrahedrally close-packed (TCP) sphere phases. Here, we report a versatile material platform comprising two blocks with substantial conformational asymmetry, A = poly(trifluoroethyl acrylate) and B = poly(dodecyl acrylate), and use it to compare the phase behavior of AB diblocks, ABA triblocks, and (AB)(n) radial star copolymers with n = 3 or 4. Each architecture forms TCP sphere phases at minority A block compositions (f(A) < 0.5), namely, sigma and AlS, but with differences in the location of order-order phase boundaries that are not anticipated by mean-field self-consistent field theory simulations. These results expand the palette of polymer architectures that readily self-assemble into complex TCP structures and suggest important design considerations when targeting specific phases of interest.
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Details
- Title
- Architecture Effects in Complex Spherical Assemblies of (AB)(n)-Type Block Copolymers
- Creators
- Stephanie M. Barbon - University of California, Santa BarbaraJung-Ah Song - University of California, Santa BarbaraDuyu Chen - University of California, Santa BarbaraCheng Zhang - University of California, Santa BarbaraJoshua Lequieu - University of California, Santa BarbaraKris T. Delaney - University of California, Santa BarbaraAthina Anastasaki - University of California, Santa BarbaraManon Rolland - University of California, Santa BarbaraGlenn H. Fredrickson - University of California, Santa BarbaraMorgan W. Bates - University of California, Santa BarbaraCraig J. Hawker - University of California, Santa BarbaraChristopher M. Bates - University of California, Santa Barbara
- Publication Details
- ACS Macro Letters, v 9(12), pp 1745-1752
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 8
- Grant note
- DE-AC02-76SF00515 / U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences; United States Department of Energy (DOE) Northwestern University, E.I. DuPont de Nemours Co. DE-AC02-06CH11357 / DOE Office of Science by Argonne National Laboratory; United States Department of Energy (DOE) 0960140 / National Science Foundation; National Science Foundation (NSF) Dow Chemical Company
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000600159500005
- Scopus ID
- 2-s2.0-85096574389
- Other Identifier
- 991020950598404721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Polymer Science