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Synthesis and characterization of photo-sensitive polyimide containing a chalcone structure for photo-alignment of liquid crystals
- Issue Date
- 18-Feb-2002
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- chalcone; photo-sensitive polyimide; photo-dimerization
- Citation
- COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, v.198, pp.875 - 879
- Volume
- 198
- Start Page
- 875
- End Page
- 879
- ISSN
- 0927-7757
- Abstract
- We introduced the chalcone moiety as a side chain in the backbone of polyimide for photo-alignment layers. The rate of photo-reaction was followed by the disappearance of the C=C-C=O bond in the chalcone moiety using UV-visible spectroscopy. The decay of the absorption peak at around 340 nm decreased significantly in less than a few minutes at room temperature. The alignment properties are very much dependent on the chain length of the chalcone moiety. (C) 2002 Elsevier Science B,V. All rights reserved.
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Collections - College of Engineering > Chemical Engineering Major > 1. Journal Articles
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