Aromatic side-chain liquid-crystalline polyurethanes with azobenzene mesogenic units
✍ Scribed by Marko Brecl; Gabriela Ambrožič; Majda Žigon
- Book ID
- 106000561
- Publisher
- Springer
- Year
- 2002
- Tongue
- English
- Weight
- 431 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0170-0839
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📜 SIMILAR VOLUMES
A series of side chain liquid crystal polyurethanes (CnCNPs), in which the spacer length was varied from 2 to 12 methylene units, were synthesized by the addition polymerization of ␣-[bis(2-hydroxyethyl)amino]--(4-cyanoazobenzene-4Ј-oxy)alkanes (CnCN-diols) with hexamethylene diisocyanate. The liqui
## Abstract The structure of poly(L‐lysine) containing 44% azobenzene units in the side chain was studied by X‐ray diffraction between room temperature and 150°C. The polymer exhibits a mesomorphic structure of the smectic A1 type. In this structure, stable at least until 150°C, each smectic layer