Adukty trichloracetyl isokyanátu jako iniciátory pro Cu-RDRP vodorozpustných monomerů

Müllerová, Eliška

While the synthesis of complex polymer architectures (CPAs) is achievable via copper- mediated reversible-deactivation radical polymerization (Cu-RDRP), the conventional protocols are often limited by the monofunctionality of the initiation sites and their inefficient introduction into CPAprecursors. Arecently developed strategy for the synthesis of CPAs, such as star polymers or graft copolymers, mitigates this limitation by employing trichloroacetyl isocyanate (TAI) to efficiently introduce trifunctional Cu-RDRP initiation sites onto various CPA precursors. So far, this strategy has been mainly explored for non-polar monomers, such as styrene and (meth)acrylates. To further explore the versatility of TAI-derived initiators and broaden application spectrum of the TAI strategy, this work focuses on the development of Cu- RDRP protocols for polar, water-soluble monomers. The systematic optimization of the polymerization conditions involved screening of various Cu-RDRP parameters (e.g., ligand character, solvent, temperature, or the stoichiometry of the catalytic system) and employed two different Cu-RDRP approaches, ATRP and Cu(0)-RDRP, characterized by different forms of the copper catalyst. PEGMA and NIPAM were used as model methacrylate and acrylamide monomers. Particularly for PEGMA, optimized...

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