Effects of the chain length of crosslinking agent and dye-doped amount on the electro-optical properties of polymer-dispersed liquid crystal films prepared by nucleophile-initiated thiol-ene click reaction. Issue 1 (2nd January 2020)

• Record Type: Journal Article
• Authors: Zhang, Li; Shi, Zhiqing; He, Taoyu; Liu, Yawen; Wang, Yinghan
• Is Part Of: Liquid crystals. Volume 47:Issue 1(2020)
• Page Start: 42
• Page End: 53
• Publication Date: 2020-01-02
• Subjects: PDLC -- chain length of crosslinking agent -- reaction temperature -- dye -- electro-optical properties; Liquid crystals -- Periodicals; 548.905
• DOI: 10.1080/02678292.2019.1626924
• Languages: English
• ISSNs: 0267-8292

Abstract

ABSTRACT: A series of crosslinking agents with different chain lengths were used to explore their effect on electro-optical properties of dye-doped polymer dispersed liquid crystals (PDLCs) film prepared by nucleophile-initiated thiol-ene click reaction. The influences of dye contents and temperatures on electro-optical properties were also investigated. It was found that the increase in chain length of crosslinking agent leads to the increase in driving voltage and the decrease in memory effect. The decrease in reaction temperature causes a decrease in driving voltage and an increase in transmittance. Particularly, the dye content could be optimised to obtain promising materials with minimum driving voltage and high contrast ratio for display applications. Graphical abstract: