Superlattice by charged block copolymer self-assembly

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Charged block copolymers are of great interest due to their unique self-assembly and physicochemical properties. Understanding of the phase behavior of charged block copolymers, however, is still at a primitive stage. Here we report the discovery of an intriguing superlattice morphology from compositionally symmetric charged block copolymers, poly[(oligo(ethylene glycol) methyl ether methacrylate–co–oligo(ethylene glycol) propyl sodium sulfonate methacrylate)]–b–polystyrene (POEGMA–PS), achieved by systematic variation of the molecular structure in general, and the charge content in particular. POEGMA–PS self-assembles into a superlattice lamellar morphology, a previously unknown class of diblock nanostructures, but strikingly similar to oxygen-deficient perovskite derivatives, when the fraction of charged groups in the POEGMA block is about 5–25%. The charge fraction and the tethering of the ionic groups both play critical roles in driving the superlattice formation. This study highlights the accessibility of superlattice morphologies by introducing charges in a controlled manner.

Original languageEnglish (US)
Article number2108
JournalNature communications
Volume10
Issue number1
DOIs
StatePublished - May 8 2019

Fingerprint

Ethylene Glycol
block copolymers
Self assembly
Block copolymers
self assembly
Methyl Ethers
Nanostructures
glycols
ethylene
Molecular Structure
tethering
Methacrylates
Phase behavior
Oxygen
sulfonates
Molecular structure
Polyethylene glycols
ethers
molecular structure
Sodium

How much support was provided by MRSEC?

  • Shared

Reporting period for MRSEC

  • Period 6

PubMed: MeSH publication types

  • Journal Article
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Research Support, Non-U.S. Gov't

Cite this

Superlattice by charged block copolymer self-assembly. / Shim, Jimin; Bates, Frank S.; Lodge, Timothy P.

In: Nature communications, Vol. 10, No. 1, 2108, 08.05.2019.

Research output: Contribution to journalArticle

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