Abstract
A highly ultraviolet (UV)-resistant dopant 3HBBTfV consisting of an α-trifluomethyl vinylbenzene (TfV) moiety was synthesized and mixed with a commercial LC host (A) to promote its dielectric anisotropy in LC mixture C (A:3HBBTfV = 9:1 w/w). Their electric-optical properties were studied and compared with those of an analogous commercial LC mixture B composed of LC mixture A (as a commercial host) mixed with the same weight ratio (10% wt.) of a commercial component 3HBEBTf containing a 3,4,5-trifluorobenzene (BTf) moiety. The electro-optical properties of voltage holding ratio (VHR) values and voltage-transmission (V-T) curves of LC mixture C were sustained after the UV irradiation. These results showed that dopant 3HBBTfV (acting as an UV stabilizer) demonstrated a higher stability under UV exposure in contrast to commercial component 3HBEBTf. Therefore, LC mixture C (containing UV-resistant dopant 3HBBTfV) exhibited good UV resistance, high dielectric anisotropy, and excellent electro-optical properties.
Highlights
Liquid crystal displays (LCDs) are very important and indispensable to modern life owing to their various applications, such as notebooks, monitors, mobile phones, televisions, and portable devices
Nematic liquid crystal (LC) mixtures have been widely utilized in the field of liquid crystal displays (LCDs), and blue phase LCs have potentials to be further explored as new materials for future applications [10,11,12]
A novel UV-resistant dopant 3HBBTfV has been successfully designed and synthesized, which was well mixed with LC mixture A to develop LC mixture C
Summary
Liquid crystal displays (LCDs) are very important and indispensable to modern life owing to their various applications, such as notebooks, monitors, mobile phones, televisions, and portable devices. Due to their small sizes, light weights, portabilities, high image qualities, and low-power consumptions, LCDs have become main trends in all display areas [1,2,3,4,5]. Nematic liquid crystal (LC) mixtures have been widely utilized in the field of LCDs, and blue phase LCs have potentials to be further explored as new materials for future applications [10,11,12]. The durable stabilities of LC mixtures can be estimated by the variations of the VHR and RDC parameters before and after UV treatments [20]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
