The synthesis of 1-biphenyl-4-alkyl-[1,2,3]-triazoles and their mesomorphic behaviour

ABSTRACT

A series of 1-biphenyl-4-alkyl-[1,2,3]-triazole-based liquid crystal compounds were synthesised via a fast and efficient microwave mediated ‘Click Reaction’ and their phase behaviour is presented. Most of the 1-(3-fluorobiphenyl)-4-alkyl-[1,2,3]-triazole compounds exhibited a smectic A phase with relatively low transition temperatures compared to previously examined aryl-triazole-based mesogens. Small angle X-ray scattering measurement indicated the existence of deep smectic phase for some cases. Structural variations gave rise to different phase behaviour in these triazole-based compounds.

Graphical Abstract

KEYWORDS:

• Triazole
• small angle X-ray scattering
• smectic A
• structural variations

Acknowledgements

Research was supported by the NSF. Award Number: 1307674 Project Title: Connecting Short Range Order to Macroscopic Properties in Complex Structured Fluids. The authors would like to thank Chenhui Zhu from Lawrence Berkeley National Laboratory for his assistance with SAXS experiments.

Disclosure statement

No potential conflict of interest was reported by the authors.

Supplementary material

Supplementary material can be accessed here.

Additional information

Funding

Research was supported by the NSF. Award Number: 1307674 Project Title: Connecting Short Range Order to Macroscopic Properties in Complex Structured Fluids.