A Photoaddressable Liquid Crystalline Phase Transition in Graphene Oxide Nanocomposites

Crespo, M., Santagiuliana, G., Picot, O., Portale, G., Bilotti, E. & Gautrot, J. E., Jun-2019, In : Advanced Functional Materials. 29, 24, 8 p., 1900738.

Research output: Contribution to journalArticleAcademicpeer-review

  • Maria Crespo
  • Giovanni Santagiuliana
  • Olivier Picot
  • Giuseppe Portale
  • Emiliano Bilotti
  • Julien E. Gautrot

The multifunctionality of graphene has the potential to unlock important developments in nanocomposite science. However, the manipulation of graphene without interfering with its unique properties and while controlling its spatial organization remains challenging. Here, the formation of a photoaddressable liquid crystalline (LC) solution through the stabilization of graphene oxide (GO) with photocleavable brushes is described. The LC behavior leads to the thermodynamic entrapment of GO into low aspect ratio domains that fail to display the properties typically predicted for graphene nanocomposites. The morphology and structural and electronic performance of these nanocomposites are regenerated through the brush cleavage, which controls the phase transition of the LC phase. These results show that kinetic control of graphene assembly can be an attractive tool toward the dynamic regulation of processable sol states and structured percolated networks for rational composite manufacturing.

Original languageEnglish
Article number1900738
Number of pages8
JournalAdvanced Functional Materials
Issue number24
Publication statusPublished - Jun-2019


  • graphene, liquid crystal, nanocomposite, photoresponsive, polymer brush, MECHANICAL-PROPERTIES, THIOL-ENE, PERCOLATION, THICKNESS, SHEETS

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