Schiff base derivative doped chiral nematic liquid crystals with a large wavelength shift driven by temperature and light

A chiral binaphthol derivative linked with a salicylaldehyde Schiff base was successfully synthesized and studied in detail, which had been found to possess interesting properties of both UV light and thermal response. When the chiral derivative was used to develop responsive liquid crystal (LC) mat...

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Bibliographic Details
Published in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2020, Vol.8 (2), p.561-566
Main Authors: Ren, Lei, He, Wanli, Wei, Meiju, Luo, Shiguang, Yao, Daipeng, Yang, Zhou, Wang, Dong, Cao, Hui
Format: Article
Language:English
Subjects:
Cholesteric liquid crystals
Imines
Nematic crystals
Thermal response
Ultraviolet radiation
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Summary:A chiral binaphthol derivative linked with a salicylaldehyde Schiff base was successfully synthesized and studied in detail, which had been found to possess interesting properties of both UV light and thermal response. When the chiral derivative was used to develop responsive liquid crystal (LC) materials, it was found that the reflective peak of the doped LCs could be reversibly shifted between 540 nm and 1200 nm by temperature and could also be widely moved from 540 nm to 2500 nm by UV irradiation. The results provided a new way to design photochromic and thermochromic materials. A chiral salicylaldehyde Schiff-base was successfully synthesized and was used to develop responsive chiral liquid crystals with large wavelength shift driven by temperature and UV light irradiation.
ISSN:2050-7526
2050-7534
DOI:10.1039/c9tc04609g