Halogen-bonded mesogens direct polymer self-assemblies up to millimetre length scale

Nikolay Houbenov, Roberto Milani, Mikko Poutanen, Johannes Haataja, Valentina Dichiarante, Jani Sainio, Janne Ruokolainen, Giuseppe Resnati, Pierangelo Metrangolo, Olli Ikkala

Research output: Contribution to journalArticleScientificpeer-review

45 Citations (Scopus)
134 Downloads (Pure)

Abstract

Aligning polymeric nanostructures up to macroscale in facile ways remains a challenge in materials science and technology. Here we show polymeric self-assemblies where nanoscale organization guides the macroscopic alignment up to millimetre scale. The concept is shown by halogen bonding mesogenic 1-iodoperfluoroalkanes to a star-shaped ethyleneglycol-based polymer, having chloride end-groups. The mesogens segregate and stack parallel into aligned domains. This leads to layers at ~10 nm periodicity. Combination of directionality of halogen bonding, mesogen parallel stacking and minimization of interfacial curvature translates into an overall alignment in bulk and films up to millimetre scale. Upon heating, novel supramolecular halogen-bonded polymeric liquid crystallinity is also shown. As many polymers present sites capable of receiving halogen bonding, we suggest generic potential of this strategy for aligning polymer self-assemblies.
Original languageEnglish
Article number4043
Pages (from-to)1-8
Number of pages8
JournalNature Communications
Volume5
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

Keywords

  • Halogen-bonding
  • Nanostructure
  • Polymer
  • Self-assembly

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