Evidence map›Paper›PMID 30249659›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2018

Stable Frank-Kasper phases of self-assembled, soft matter spheres.

Abhiram Reddy, Michael B Buckley, Akash Arora, Frank S Bates, Kevin D Dorfman, Gregory M Grason

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

31 citing papers in PubMed.

  1. Article
  2. Article
  3. Learning nature's assembly language with polymers.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  4. Article
  5. Article
  6. Designing the Self-Assembly of Disordered Materials Via Color Frustration.Advanced materials (Deerfield Beach, Fla.) · 2025
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
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  14. Article
  15. Article
  16. Enhancing ion transport in charged block copolymers by stabilizing low symmetry morphology: Electrostatic control of interfaces.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  17. Dodecagonal quasicrystals of oil-swollen ionic surfactant micelles.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Abhiram ReddyDepartment of Polymer Science and Engineering, University of Massachusetts, Amherst, MA 01003.
Michael B BuckleyDepartment of Physics, University of Massachusetts, Amherst, MA 01003.
Akash AroraDepartment of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455.
Frank S BatesDepartment of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455 grason@mail.pse.umass.edu dorfman@umn.edu bates001@umn.edu.ORCID 0000-0003-3977-1278
Kevin D DorfmanDepartment of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455 grason@mail.pse.umass.edu dorfman@umn.edu bates001@umn.edu.ORCID 0000-0003-0065-5157
Gregory M GrasonDepartment of Polymer Science and Engineering, University of Massachusetts, Amherst, MA 01003; grason@mail.pse.umass.edu dorfman@umn.edu bates001@umn.edu.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Single molecular species can self-assemble into Frank-Kasper (FK) phases, finite approximants of dodecagonal quasicrystals, defying intuitive notions that thermodynamic ground states are maximally symmetric. FK phases are speculated to emerge as the minimal-distortional packings of space-filling spherical domains, but a precise measure of this distortion and how it affects assembly thermodynamics remains ambiguous. We use two complementary approaches to demonstrate that the principles driving FK lattice formation in diblock copolymers emerge directly from the strong-stretching theory of spherical domains, in which a minimal interblock area competes with a minimal stretching of space-filling chains. The relative stability of FK lattices is studied first using a diblock foam model with unconstrained particle volumes and shapes, which correctly predicts not only the equilibrium σ lattice but also the unequal volumes of the equilibrium domains. We then provide a molecular interpretation for these results via self-consistent field theory, illuminating how molecular stiffness increases the sensitivity of the intradomain chain configurations and the asymmetry of local domain packing. These findings shed light on the role of volume exchange on the formation of distinct FK phases in copolymers and suggest a paradigm for formation of FK phases in soft matter systems in which unequal domain volumes are selected by the thermodynamic competition between distinct measures of shape asymmetry.

Indexed as

block copolymersFrank–Kasper phasesoptimal latticesself-assembly

Identifiers

PMID30249659
PMCPMC6187128

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.