Macroscopic Nanotemplating of Semiconductor Films with Hydrogen-Bonded Lyotropic Liquid Crystals

Side chain liquid crystal polyurethanes

Side chain liquid crystal polyurethanes with azobenzene mesogenic moieties: Influence of spacer length on hydrogen bonding at different temperatures

✍ M. Brecl; M. Žigon; T. Malavašič 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 275 KB 👁 2 views

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