Metallopolymers chain

Thus the analysis of imit variability in metallopolymer chains presented here may give the impression that polymerization of MCM is accompanied by many of side processes. As noted in the introduction to this chapter, it might appear problematic that the unique character of the polymerization products from these monomers is due to the structural iniformity of the macro complexes. Actually this is not so. 

Magnetic susceptibility, nickel 7]5-ligands, 8, 159—160 Magnetization, in dynamic NMR, 1, 409 Main-chain metallopolymers, with -coordinated metals and long spacers, characteristics, 12, 347... 

Chapter 1, written by Pittmann and Carraher, two of the early pioneers of the metallopolymer field, surveys the developments in the area in the 1960s and 1970s when metallopolymers were almost unknown. Chapter 2, by Abd-El-Aziz and Shipman, surveys the recent progress in the synthetic metallopolymer field. Chapter 3, by Rider and Manners, covers the recently emerging field of block copolymers with transition metal atoms in the main chain of at least one of the blocks. Synthetic routes to metal-containing block copolymers and applications in the field of... 

Other Side-chain Metallopolymers 12.06.2.3.1 Polymers with 7r-coordinated metals... 

Main-Chain Metallopolymers Containing 7r-Coordinated Metals and Long Spacer Groups... 

It should he noted that the complication of the spatial organization of metal carboxylated groups leads to an enhancement of their thermal stability. The increasing of the portion of metal carboxylated groups in a polymer chain reveals the same effect. It was found that the end and intrachain metal carboxylic groups of metallopolymer and copolymer formed during thermal transformations also differ in their thermal stability. 

It is expected that investigations on homo- and copoljnnerization of optically-active MCMs will receive a new impetus. This particularly relates to the influence of the end unit on the stereoconformation of the growing chain. It is reasonable to expect considerable advances in chiral catalysis using such metallopolymers. A metallocenter may activate a substrate and generate an asymmetric induction simultaneously. 

The second stage is the formation of a film from the metallopolymer solution by a glaze method and slow (10-15 h) evacuation of the solvent to a residual percentage of 5-10%. The resulting metastable membrane film is freed from parent salt by washing with methanol or water. Finally, the third stage, reduction, is very quick the formed particles are linked to polymer chains (Fig. 8-6, bold points). 

The structure of such metallopolymers can be regulated by varying the ratio of sizes of block-copolymer (general molecular weight, composition) and micelle parameters (size of nucleus/cover, form, polydispersion), and this enables us to use block-copolymers as nanoreactors or templates. The ratio between the molecular weights of the first (polar) and the second (hydrocarbon) components Mi and M2) is important to provide steric stabilization M = nM2 (where n is the number of the second component chains). As a rule, M is 10 -10 andM2 = 10 -10. ... 

---