Polymeric nanocylinders by combining block copolymer self-assembly and nanoskiving

Mohammadreza Nasiri, Arthur Bertrand, Theresa M. Reineke, Marc A. Hillmyer

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

A new facile fabrication approach to generate polymeric nanostructures is described. Block copolymers containing immiscible segments can self-assemble to generate ordered nanostructures, such as cylinders of one block in a matrix of the other in the bulk, which can then be sectioned on the nanoscale using a microtome (nanoskiving). Dispersing these sections in a selective solvent for the matrix block results in nanocylinders. In one example, we utilized a poly(N,Ndimethylacrylamide)- block-poly(styrene) (PDMA-PS) copolymer containing 36% by volume of PS. This composition was selected as it self-assembles into cylinders of PS in a matrix of PDMA. Following a previously described procedure, the cylinders were aligned using a channel die. The aligned samples were subsequently sectioned using a microtome containing a diamond knife and dispersed in water, a selective solvent for the PDMA matrix, affording PS nanocylinders with a PDMA corona. This technique allows tuning of nanocylinders without the requirement of specialty fabrication equipment.

Original languageEnglish (US)
Pages (from-to)16283-16288
Number of pages6
JournalACS Applied Materials and Interfaces
Volume6
Issue number18
DOIs
StatePublished - Sep 24 2014

Bibliographical note

Publisher Copyright:
© 2014 American Chemical Society.

Keywords

  • Block copolymer self-assembly
  • Nanocylinders
  • Nanoskiving
  • Polymeric nanoparticles

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