Synthesis of Side Chain Liquid Crystal Polymers by Living Ring Opening Metathesis Polymerization. 3. Influence of Molecular Weight, Interconnecting Unit and Substituent on the Mesomorphic behavior of Polymers with Laterally Attached Mesogens
MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF CHEMISTRY
Pagination or Media Count:
Norbornene derivatives containing laterally attached 2,5-bis4-n- alkoxybenzoyl OXY mesogens were polymerized by controlled ring opening metathesis polymerization to provide polymers in high yield with 5-100 repeat units and narrow molecular weight distributions. Monomers with nl displayed monotropic or enantiotropic nematic mesophases. All polymers displayed enantiotropic nematic mesophases regardless of the spacer, molecular weight or length or the n-alkoxy substituent. Constitutional isomers of poly5-carbo2, 5-bis-4 methoxybenzoyloxybenzyloxybicyclo2.2.1hep t-2-enes containing laterally attached mixed phenylesterbenzylester units are amorphous. Side chain liquid crystal polymers SCLCPs, living ring opening metathesis polymerization.
- Polymer Chemistry