Twist-grain boundary phase induced by Au nanoparticles in a chiral liquid crystal host

Maja Trček, George Cordoyiannis, Brigita Rožič, Vassilios Tzitzios, George Nounesis, Samo Kralj, Ioannis Lelidis, Emmanuelle Lacaze, Heinz Amenitsch, Zdravko Kutnjak*

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

We report on the stabilisation of the liquid-crystalline, twist-grain boundary A (TGBA) phase in mixtures of a chiral liquid crystal and surface-functionalised spherical Au nanoparticles (NPs) of 10 nm diameter. The results, obtained by calorimetric, optical, small-angle X-ray and plasmon resonance measurements, demonstrate that a TGBA phase, which is metastable for the pure liquid crystal host, can be effectively stabilised for a 3 K range in the presence of NPs. Moreover, the role of NPs size on the TGBA stabilisation is briefly discussed.

Original languageEnglish
Pages (from-to)1575-1581
Number of pages7
JournalLiquid Crystals
Volume44
Issue number10
DOIs
Publication statusPublished - 9 Aug 2017

Keywords

  • calorimetry
  • Gold nanoparticles
  • liquid crystals
  • plasmon resonance
  • SAXS
  • twist-grain boundary phase

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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    Trček, M., Cordoyiannis, G., Rožič, B., Tzitzios, V., Nounesis, G., Kralj, S., ... Kutnjak, Z. (2017). Twist-grain boundary phase induced by Au nanoparticles in a chiral liquid crystal host. Liquid Crystals, 44(10), 1575-1581. https://doi.org/10.1080/02678292.2017.1306887