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

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

Research output: Contribution to journalArticleScientificpeer-review

42 Citations (Scopus)

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
Number of pages8
JournalNature Communications
Volume5
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

Keywords

  • Chemical Sciences
  • Materials Science

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    Houbenov, N., Milani, R., Poutanen, M., Haataja, J., Dichiarante, V., Sainio, J., Ruokolainen, J., Resnati, G., Metrangolo, P., & Ikkala, O. (2014). Halogen-bonded mesogens direct polymer self-assemblies up to millimetre length scale. Nature Communications, 5. https://doi.org/10.1038/ncomms5043