CAS NO.223572-88-1 refers to a liquid crystal compound called LC756. It is a reactive mesogen, a type of material that exhibits both liquid crystal behavior and the ability to undergo chemical reactions. LC756 is known for its high stability, low viscosity, and excellent electro-optic properties.

LC756 has been used in various applications, including in the manufacturing of displays, optical switches, and waveguides. It has also been studied for its potential use in optoelectronics and photonics. LC756 is particularly suitable for use in polymer-dispersed liquid crystal (PDLC) devices, which are used for privacy films, smart windows, and other applications that require electrically switchable transparency.

LC756 is synthesized by reacting two compounds, a mesogen with a reactive group and a crosslinking agent. The resulting compound exhibits liquid crystal behavior, and its reactive group enables it to undergo polymerization and crosslinking reactions. The degree of crosslinking can be controlled by adjusting the amount of crosslinking agent used in the synthesis.

Overall, LC756 is a promising material with potential applications in various fields. Its unique properties and ability to undergo chemical reactions make it a versatile and valuable compound in the development of new technologies.