Engineering of Side Chain Liquid Crystalline Polymers by Living Polymerizations

Molecular Engineering of Side Chain Liquid Crystalline Polymers by Living Polymerizations  

Termination can be avoided or suppressed in ionic and metathesis polymeriza- 

Since the number of polymer chains resulting from a chain polymerization is proportional to the amount of initiator used, the degree of polymerization is inversely proportional to initiator concentration. The ratio of the concentration of reacted monomer and polymer chains is determined by the ratio of the rates of propagation (/ p) and all chain forming reactions, including transfer R ) (Eq. 3). 

The breadth of the molecular weight distribution is described by the ratio of the weight and number average molecular weights or degrees of polymerization, and is referred to as the polydispersity index 

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This article is reprinted with permission from C. Pugh, A. Kiste, Progress in Polymer Science, Vol. 22 Molecular Engineering of Side-Chain Liquid Crystalline Polymers by Living Polymerization, (1997), Elsevier Science Ltd., Oxford, England. 

A comprehensive review about the engineering and preparation of side-chain liquid-crystalline polymers by living polymerization methods including ROMP has been given recently. Consequently, only the more recent contributions shall be covered briefly. One convenient approach for the preparation of side-chain liquid-crystalline materials entails the ROMP of norbornenes carrying mesogenic side groups in the... 

Peng H, Chen Y, Chen L, He X, Li F (2010) Luminescent mesogen jacketed poly(l-alkyne) bearing lateral terphenyl with hexyloxy tail. J Polym Sci Part A Polym Chem 48 5679-5692 Percec V, Tomazos D (1992) Molecular engineering of side-chain liquid-crystalline polymers by living cationic polymerization. Adv Mater 4 548-561... 

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