Abstract
| - A new initiating/catalytic system for atom transfer radical polymerization (ATRP) is reported.This system starts with alkyl halides as initiators and transition metal complexes in their oxidatively stablestate (e.g., CuIIBr2/ligand) as catalysts. The activators are generated by electron transfer (AGET) withoutinvolvement of initiating organic radicals. AGET ATRP has a significant advantage over simultaneous reverseand normal initiation (SR&NI) ATRP, because it provides a simple route for synthesizing pure polymerswith complex architectures such as star copolymers, block copolymers, etc. Furthermore, AGET ATRPcan be also successfully carried out in miniemulsion. Homopolymers and pure block copolymers weresuccessfully synthesized via ATRP in miniemulsion using AGET ATRP. The final products were analyzedvia two-dimensional chromatography, which combines high performance liquid chromatography (HPLC)and gel permeation chromatography (GPC). The resulting chromatograms showed that pure linear blockcopolymers and star block copolymers were prepared without the presence of any homopolymers.
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