Abstract
ABSTRACT The photoreorientation effect in thin films of a liquid crystalline side-group polysiloxane with an azobenzene derivative admixture of the pseudo-stilbene type is presented. The film is introductory homogenously aligned in a typical liquid crystal cell of 3 µm in thickness due to rubbed polyimide coatings. The molar concentration of the azobenzene derivative, calculated per monomeric mesogenic units of the polysiloxane, is equal to 0.021 M/M and corresponds to 2 wt%. The exposure with linearly polarized light results in a reorientation of the azobenzene derivative and the 4′-cyano biphenyl side groups of the liquid crystalline polymer perpendicular towards the electric field vector of the incident light. Caused due to the reorientation process the degree of order is decreased from 0.73 to 0.44.
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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
