Synthesis and Aqueous Solution Characterization of Catalytically Active Block Copolymers Containing Imidazole

Thermoresponsive terpolymers based on methacrylate monomers: Effect of architecture and composition

“…The M n s of the polymers and their precursors were higher than the theoretical M w s due to partial deactivation of the initiator. This is in agreement with other studies where the polymers were synthesized by GTP and a high M w monomer, like PEGMA, was used which could not be distilled 38–41…”

“…The effective p K a s of the DMAEMA units in the terpolymers are shown in Table 2. The p K a values were between 6.8 and 7.2, in agreement with previous investigations on DMAEMA‐containing polymers 20–22, 35, 41. It can be observed that the p K a is affected by the hydrophobicity of the copolymers.…”

Fast, multi-responsive microgels based on photo-crosslinkable poly(2-(dimethylamino)ethyl methacrylate)

“…9). With decreasing pH, the swelling degree of the microgel starts to increase at a pH of 7, which is in accordance with the start of the buffering zone of the polymer (pK a,DMAEMA z8.5; pK a,PDMAEMA,network z5.2; buffering zone: pHZpK a G2) [31,32]. At a pH below 5, the gel was swollen to such an extent that it was released from the gold substrate, and no further measurements could be performed.…”

Near-monodisperse, catalytically active, imidazole-containing homooligomers: Synthesis by group transfer polymerization and solution characterization

“…Current work in our laboratory involves the copolymerization of the imidazole-containing monomer with other methacrylate monomers. 27 The solvent chosen for these syntheses is propylene carbonate.…”

“…In particular, we are preparing diblock copolymers which must form micelles in water at high pH, with the imidazole-containing units in the micellar core, and the more hydrophilic monomer units in the micellar corona. 27 We then expect that the hydrophobic substrate will selectively partition into the micellar core where the "local" imidazole concentration is very high. The substrate will be hydrolyzed very quickly to more hydrophilic products which will readily abandon the core and make room for fresh substrate.…”