Abstract—We synthesized photo cross linkable side chain photopolymer with a chalcone derivative in the side chain. The photopolymer has the alkyl spacer introduced between the main chain and chalconyl moiety. The thermal stability of this photopolymer was measured by differential scanning calorimetry and the thermogravimetric analysis measurement. The retardation of prepared photoalignment film with different polarized UV exposure energy was evaluated for confirming λ/4 = 125 nm at 500 nm. This result indicated the photodimerization contributes to the enhancement of LC photoa lignment.
Index Terms—Chalcone, liquid crystals, thermal stability, photodimerization, UV exposure energy.
The authors are with the IT Convergence material R&D Group, Korea Institute of Industrial Technology (KITECH), 35-3, Hongcheon-ri, Ipjang-myeon, Seobuk-gu, Cheonan 331-825, South Korea (e-mail:firstname.lastname@example.org.)
Cite: Ju Hui Kang, Si Yeol Yang, Seung Yong Jeong, Sangkug Lee, Kyung Ho Choi, and Gyo jic Shin, "The Characteristics of Photoa lignment Layer with Chalcone Derivative for 3D Film Applications," International Journal of Engineering and Technology vol. 4, no. 4, pp. 379-381, 2012.