Synthesis and characterisation of chiral liquid crystal compounds containing cholesterol and D(+)-camphoric acid

ABSTRACT

Two series of chiral liquid crystal compounds were synthesised from benzoic acid containing cholesterol with different carbon-chain lengths and bisphenol monoester containing camphoric acid with different carbon-chain lengths, named BCP-C and DCP-C. The structure of the monomers is characterised by IR, ¹H NMR and ¹³C NMR, which indicate that the synthesised molecule conforms to the molecular design. The textures of monomers were characterised by POM, and their selective reflection was studied. It was found that the synthesised liquid crystal compounds exhibited good liquid crystal and optical properties. The phase transition behaviour was characterised using DSC, and the results were consistent with those observed by POM. TGA showed that they had good thermal stability.

GRAPHICAL ABSTRACT

KEYWORDS:

• Chiral liquid crystals
• selective reflection
• texture
• thermal behaviour

Disclosure statement

No potential conflict of interest was reported by the author(s).

Supplementary data

Supplemental data for this article can be accessed online at https://doi.org/10.1080/02678292.2023.2260775.

Additional information

Funding

This work was supported by the Joint fund of the National Natural Science Fund [U1708258].