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Controlling the Phase Behavior and Reflection of Main-Chain Cholesteric Oligomers Using a Smectic Monomer.
- Source :
-
International journal of molecular sciences [Int J Mol Sci] 2022 Mar 18; Vol. 23 (6). Date of Electronic Publication: 2022 Mar 18. - Publication Year :
- 2022
-
Abstract
- Cholesteric liquid crystals (CLCs) are a significant class of temperature-responsive photonic materials that have the ability to selectively reflect light of a specific wavelength. However, the fabrication of main-chain CLC oligomers with dramatic reflection band variation upon varying the temperatures remains a challenge. Here, a feasible method for improving and controlling the responsiveness of main-chain cholesteric liquid crystal oligomers by the incorporation of a smectic monomer is reported. The smectic monomer strengthens the smectic character of the oligomers and enhances the magnitude of the change of the pitch as a function of temperature upon approaching the cholesteric-smectic phase transition temperature. The central wavelength of the reflection band can be easily modified by mixing in an additional chiral dopant. This promising method will open the door to the preparation of temperature-responsive photonic devices with excellent responsiveness.
- Subjects :
- Phase Transition
Photons
Temperature
Liquid Crystals chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 1422-0067
- Volume :
- 23
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- International journal of molecular sciences
- Publication Type :
- Academic Journal
- Accession number :
- 35328697
- Full Text :
- https://doi.org/10.3390/ijms23063275