Cited by 67Block Copolymer Self-AssemblyPolymer crystallization and propertiesAdvanced Polymer Synthesis and Characterization

Morphology and Thermodynamic Properties of a Copolymer with an Electronically Conducting Block: Poly(3-ethylhexylthiophene)-block-poly(ethylene oxide)

Patel, Shrayesh N., Javier, Anna E., Beers, Keith M., Pople, John A., Ho, Victor, Segalman, Rachel A., Balsara, Nitash P.·2012·Nano Letters

Abstract

We report on the synthesis and morphology of a block copolymer, poly(3-(2'-ethylhexyl)thiophene)-b-poly(ethylene oxide) (P3EHT-b-PEO), that conducts both electrons and ions. We show that in the melt state the P3EHT-b-PEO chains self-assemble to produce traditional nanoscale morphologies such as lamellae and gyroid. This is in contrast to a majority of previous studies on copolymers with electronically conducting blocks wherein a nanofibrillar morphology is obtained. Our approach enables estimation of the Flory-Huggins interaction parameter, χ. The segregation strength between the two blocks is controlled through the addition of lithium bis(trifluoromethanesulfonyl)imide (LiTFSI). For the salt-free sample, the gyroid morphology, obtained in the melt state, is transformed into lamellae below the melting temperature of the P3EHT block. This is due to the "breaking out" of the crystalline phase. For the salt-containing sample, P3EHT-b-PEO has a lamellar morphology in both melt and crystalline states (confined crystallization).

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Crossref · 10.1021/nl302454c

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  • Balsara et al. studied the effect of salt on the morphology of electron conducting P3EHT-b-PEO.

    “Balsara et al. studied the effect of salt on the morphology of electron conducting poly(3-(2′-ethylhexyl)thiophene)-b-ethylene oxide) (P3EHT-b-PEO) [74].”

    From Block Copolymers: Synthesis, Self-Assembly, and Applications (2017) · cites this paper as [74]

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Authors
Patel, S. N., Javier, A. E., Beers, K. M., Pople, J. A., Ho, V., Segalman, R. A., & Balsara, N. P.
Affiliations
  • Lawrence Berkeley National Laboratory (US)
  • SLAC National Accelerator Laboratory (US)
Corresponding author
Balsara, Nitash P.
Venue
Nano Letters
Published
2012-08-01
Volume
12
Issue
9
Pages
4901-4906
ISSN
  • 1530-6984 (ISSN-L)
  • 1530-6992
OpenAlex
W2317483780
Cited by
67
References
42
Citations by year
2026: 3 · 2025: 3 · 2024: 3 · 2023: 4 · 2022: 7 · 2021: 6 · 2020: 3 · 2019: 3 · 2018: 1 · 2017: 4 · 2016: 4 · 2015: 5 · 2014: 13 · 2013: 8
FWCI
3.82
Type
journal article
Language
en
Open access
closed
Locations
  • Nano Letters (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Materials Science › Materials Chemistry › Block Copolymer Self-Assembly
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
  • Physical Sciences › Chemistry › Organic Chemistry › Advanced Polymer Synthesis and Characterization
Keywords
block copolymers, poly(ethylene oxide), conducting polymers, ion-conducting polymers, self-assembly, gyroid morphology, lamellar morphology, Flory-Huggins interaction parameter, LiTFSI, confined crystallization, melt state, crystalline state
MeSH terms
Electric Conductivity, Materials Testing, Molecular Conformation, Particle Size, Polyethylene Glycols, Surface Properties, Thermal Conductivity, Thermodynamics, Thiophenes, Phase Transition, Macromolecular Substances, Nanostructures

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