Liquid crystal alignment property of n-alkylthiomethyl- or n-alkylsulfonylmethyl-substituted polystyrenes
- Authors
- Kang, Hyo; Park, Jin Seol; Kang, Daeseung; Lee, Jong-Chan
- Issue Date
- Dec-2009
- Publisher
- JOHN WILEY & SONS LTD
- Keywords
- liquid crystal; polystyrene; alignment; homeotropic
- Citation
- POLYMERS FOR ADVANCED TECHNOLOGIES, v.20, no.12, pp.878 - 886
- Journal Title
- POLYMERS FOR ADVANCED TECHNOLOGIES
- Volume
- 20
- Number
- 12
- Start Page
- 878
- End Page
- 886
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/15728
- DOI
- 10.1002/pat.1314
- ISSN
- 1042-7147
- Abstract
- We synthesized a series of n-alkylthiomethyl-substituted polystyrenes (#T-PS, # = 4, 8, 12, and 16) and n-alkylsulfonylmethyl-substituted polystyrenes (#S-PS, # = 4, 8, 12, and 16), where # is the number of carbon atoms in the n-alkyl side group of the polymers, using polymer analogous reactions to investigate their liquid crystal (LC) alignment properties. In general, the LC cell fabricated using the polymer film having a longer n-alkyl side group, a thioether linkage group, and a higher molar content of n-alkyl side group showed homeotropic LC alignment behavior with a pretilt angle of about 90 degrees. The homeotropic alignment behavior was well correlated with the surface energy of the polymer films; when the positive dielectric anisotropic LC (ZLI-5900-000 from Merck) and negative dielectric anisotropic LC (MLC-7026-000 from Merck) were used to fabricate the LC cells, homeotropic alignment was observed when the surface energy values of the polymer were smaller than about 25 and 32 mJ/m(2), respectively. Copyright (C) 2009 John Wiley & Sons, Ltd.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > School of Electrical Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.