Synthesis of a double-hydrophilic star-block copolymer by aqueous SET-LRP and its dual-stimuli responses

Double hydrophilic poly(ethylene glycol)-block-poly(dehydroalanine) four-arm star block copolymers: synthesis and solution behavior

“…6 Furthermore, the behavior of polymers in solution especially with regard to viscosity and solubility is also influenced by the topology. 6,7 Star-shaped double hydrophilic copolymers are in comparison to their linear counterparts a rather unknown field of polymer chemistry as this architecture brings unique difficulties in its synthesis. In general, they are synthesized via controlled radical polymerization techniques (CRP), but side reactions such as star-star coupling, or the temporally unequal or only proportional initiation of adjacent arms need to be avoided.…”

Double hydrophilic copolymers – synthetic approaches, architectural variety, and current application fields

“…, with respect to the unimer-to-micelle transition kinetics, the stability of the resulting aggregates, or the dimension and one decisive factor clearly is that junction points of more than two chemically distinct segments exist. 31,41,58,59,67,87,93…”