Effect of lateral substituents on the properties of polymerisable liquid crystals with bistolane core
A new series of polymerisable liquid crystals based on bistolane core and different lateral substituent groups (F, Cl, CH<sub>3</sub> and C<sub>2</sub>H<sub>5</sub>) were synthesised and characterised by<sup>1</sup>H-NMR and<sup>13</sup>C-NMR. The properties of these compounds were tested by DSC, POM and Abbe refractometer. The results indicate that all of these compounds display a stable nematic phase, and the introduction of lateral substituents has a significant impact on the phase behaviour and birefringence. As the size of lateral substituents gradually increases the clearing point and birefringence of the liquid crystals both show a decreasing trend. The birefringence of these new compounds reaches 0.36 ~ 0.49, which is about 2 ~ 3 times that of the commercial compounds <b>RM257</b>. These new polymerisable liquid crystals with extremely high birefringence provide a choice for developing devices based on planar optics.
Authors
- Zhaoyi Che
- Xingxuan Chai
- Minggang Hu (ORCID: https://orcid.org/0000-0002-9091-4628)
- Danyang Wan
- Juanli Li (ORCID: https://orcid.org/0000-0002-1190-9119)
- Huiyun Xia (ORCID: https://orcid.org/0000-0001-8391-4294)
- Jian Li (ORCID: https://orcid.org/0000-0002-6053-7892)
- Lingchao Mo
- Jie Zhang (ORCID: https://orcid.org/0009-0004-5173-9996)
Institutions
- Chang'an University (CN)
- Crystal Research (United States) (US)
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering (CN)
- Jangan University (KR)
- Institute of Modern Physics (CN)
Publication Details
- Journal
- Liquid Crystals
- Published
- 2024-08-05
- DOI
- https://doi.org/10.1080/02678292.2024.2386570
- Primary Topic
- Liquid Crystal Research Advancements
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Key Research and Development Projects of Shaanxi Province