Effects of the fluorinated liquid crystal molecules on the electro-optical properties of polymer dispersed liquid crystal films

ABSTRACT

The different fluorinated liquid crystal (LC) molecules doped to E8 were used as LC component to prepare polymer dispersed liquid crystal (PDLC) films. The mass fraction of the LC mixture is fixed 50.0 wt%. Results indicate that doping 8.0 wt% fluorinated LC molecule ME3CP to E8 significantly reduced the driving voltage of the PDLC films, and the driving voltage reduced with the rise of mass fraction of ME3CP. Besides, the terminal flexible chain length of the fluorinated LC molecule influenced the LC mixture properties based on E8, such as the dielectric anisotropy, birefringence and viscosity of the LC mixture, and the morphology and the electro-optical properties of PDLC films were controlled not only by the physical properties of the LC mixture, but also by the terminal flexible chain length of the fluorinated LC molecule .

GRAPHICAL ABSTRACT

KEYWORDS:

• Fluorinated liquid crystal molecule
• physical properties
• polymer dispersed liquid crystal
• polymer network
• electro-optical properties

Acknowledgment

This work was supported by the National Natural Science Foundation of China (grant nos. 51561135014, 51573003, 51372029, 51573006, 51333001, 51573101).

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China [grant numbers 51561135014, 51573003, 51372029, 51573006, 51333001, 51573101].