Preparation of discotic liquid crystal containing hydrogen bonds and photopolymerization for fixation of their mesogenic structure

POLY 216

Shin W. Lee1, Seung Jun Lee2, Ji W. Lee, taizy@hanmail.net1, Mikyung You2, and Jae Y. Jho1. (1) School of Chemical and Biological Engineering, Seoul National University, 151-742, Seoul, South Korea, (2) Hyperstructured Organic Materials Research Center and School of Chemical and Biological Engineering, Seoul National University, 151-742, Seoul, South Korea
DLC materials have been attracting attention their particular transport properties like electron or hole transfer etc. The objective of our study is to design the hydrogen-bonded complex that show the DLC behavior and to photopolymerize the DLC material to fix the structure at any temperature. Our strategy to obtain the complexes is to use hydrogen bonds between core unit and peripheral unit. At this study, core unit is phloroglucinol (PG, H-bond donor) and peripheral unit is 11-(4-(pyridin-4-yl)phenoxy)undecyl acrylate (PPUA, H-bond acceptor). To investigate the formation of the DLC complex between PG and PPUA, the IR spectra was investigated. The mesomorphic properties of PG/PPUA complexes were studied by DSC, POM and X-ray diffraction. The PG/PPUA complex exhibited columnar mesophase. Photopolymerization was performed in two methods. One was irradiation of just UV at self-assembled PG/PPPUA. The other was irradiation of UV at that with photoinitiator.
 

General Papers: Synthesis and Characterization
6:00 PM-8:00 PM, Sunday, 10 September 2006 Moscone Center -- Hall D, Poster

Division of Polymer Chemistry

The 232nd ACS National Meeting, San Francisco, CA, September 10-14, 2006