Structural characterization of new fluorinated mesogens obtained through halogen-bond driven self-assembly

Vijith Kumar, Dirk J. Mulder, Gabriella Cavallo, Tullio Pilati, Giancarlo Terraneo, Giuseppe Resnati, Albertus P.H.J. Schenning, Pierangelo Metrangolo

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Abstract

We describe the synthesis and characterization of new trimeric complexes obtained upon halogen-bond driven self-assembly of 1,4-diiodotetrafluorobenzene or α,ω– diiodoperfluoroalkanes, acting as XB-donors, with an alkoxystilbazole derivative functionalized with a methacrylate terminal group, acting as XB-acceptor. Despite the fact that the starting materials are not mesomorphic in nature, the obtained halogen-bonded complexes exhibit monotropic LC behaviour with smectic A phases possibly resulting from segregation between fluorocarbon and hydrocarbon chains. The obtained supramolecular mesogens possess reactive groups suitable for incorporation into liquid crystalline elastomeric actuators.

Original languageEnglish
Pages (from-to)54-60
Number of pages7
JournalJournal of Fluorine Chemistry
Volume198
DOIs
Publication statusPublished - 1 Jun 2017
MoE publication typeA1 Journal article-refereed

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Keywords

  • Diiodoperfluorocarbons
  • Halogen bonding
  • Liquid crystals
  • Reactive mesogens
  • Self-assembly

Cite this

Kumar, V., Mulder, D. J., Cavallo, G., Pilati, T., Terraneo, G., Resnati, G., Schenning, A. P. H. J., & Metrangolo, P. (2017). Structural characterization of new fluorinated mesogens obtained through halogen-bond driven self-assembly. Journal of Fluorine Chemistry, 198, 54-60. https://doi.org/10.1016/j.jfluchem.2016.12.011