Organometallic polymerization

Main group organometallic polymerization catalysts, particularly of groups 1 and 2, generally operate via anionic mechanisms, but the similarities with truly coordinative initiators justify their inclusion here. Both anionic and coordinative polymerization mechanisms are believed to involve enolate active sites, (Scheme 6), with the propagation step akin to a 1,4-Michael addition reaction. 

Organometallic polymerization catalysts 30.30 H. Hashimoto Senryo To Yakuhin... 

The present book contains nine chapters focusing on the design of imine and phosphorylide catalyst structures, the preparation of cycloaliphatic materials, polar/ nonpolar monomer copolymerizations, organometallic polymerizations in aqueous media, and current frontiers in ROMP and ADMET processes. Exactly forty years after the Nobel Prize for Ziegler and Natta, we give a concise description of the state of the art in these fascinating and rapidly developing fields. The authors present, likewise, viewpoints from the forefront of both academia and industrial research, so that basic science and polymer applications are equally covered. 

In view to reach this goal we have developed over the last few years (5) an electrocatalytic stem based on a new kind of organometallic polymeric films, such as [Ru(L)(CO)2]h (L = 2,2 -bipyridine derivatives), containing metal-metal bonds (Fig. 1(a)). These molecular cathodes appear to be highly selective for reduction of CO2 into CO or HCOO at a radier low overvoltage in pure aqueous electrolyte 6-8),... 

De Rosa C, Auriemma F (2011) Single site organometallic polymerization catalysis as a method to probe the properties of polyolefins. Polym Chem 2 2155-2168 De Rosa C, Auriemma F (2012) The deformability of polymers the role of disordered mesomorphic crystals and stress-induced phase transformations. Angew Chem Int Ed 51 1207-1211... 

The Nature of Organometallic Polymerization - Review, Aduon Cfeem. SeA., 52, 1 C1966). 

Coordination organometallic polymerization catalysis can be considered as borderline to anionic polymerization processes since epoxide ring opening involves a nucleophilic-like mechanism, which is assisted by monomer coordination on a... 

Similar considerations hold for supramolecular organometallic polymeric entities [34]. 

Janczewski D, Song J, Csanyi E, Kiss L, Blazso P, Katona RL, Deli MA, Gros G, Xu J, Vancso GJ (2012) Organometallic polymeric carriers for redox triggered release of molecular payloads. J Mater Chem 22 6429-6435... 

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