Nano Select (Oct 2023)

A room temperature 9CB‐based chemical sensor

  • Efthymia Ramou,
  • Susana I. C. J. Palma,
  • Ana Cecília A. Roque

DOI
https://doi.org/10.1002/nano.202200153
Journal volume & issue
Vol. 4, no. 9-10
pp. 525 – 536

Abstract

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Abstract The gas sensing potential of the 9CB (4‐cyano‐4′‐nonylbiphenyl) liquid crystal compound at ambient conditions is investigated. The solid at room temperature 9CB is incorporated in a hybrid gel formulation of ionic liquid/liquid crystal droplets immobilized in a gelatin matrix. Several ionic liquids are tested in order to tackle the crystallization of 9CB and also a 9CB‐based mixture with a different smectogen is considered. The resulting formulation demonstrates great analyte responding capabilities and can be considered an alternative format for artificial olfaction purposes.

Keywords