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In the early 80s, the use of iniferters in radical polymerization,defined as agents (such as tetraethylthiuram disulfide, phenylazotriphenylmethaneor benzyl dithiocarbamate) that are able to initiate, transfer and terminate, was actually the first successful step to date towards CLRP. Iniferters can be either: asymmetrical (denoted A¨CB), where A is a reactive radical which participates in initiation and propagation reactions whereas B is
only involved in termination reaction, or symmetrical (denoted C¨CC), where C participates in both initiation and termination reactions. Besides this, iniferters can be activated upon heating (thermal iniferters) or by UV irradiation (photoiniferters).Even though the use of iniferters led to broad MWDs and poor initiation efficiencies, this technique has allowed a broad range of monomers to be polymerized in rather mild conditions as well as several macromolecular architectures to be prepared.

[ Last edited by wgnydynl on 2013-5-10 at 11:28 ]

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