Journal of Polymer Science Part A Polymer Chemistry · 2009 · 31 citations · 31 references
Natural SciencesChemistryMaterials SciencePolymer ChemistryPolymer EngineeringPolymer MaterialsPolymer AnalysisPolymer CharacterizationPolymer StabilityPolymer StructurePolymerization ChemistryPolymerization ProcessesInitiator-to-monomer RatioPh DependencePh IndicatorsPh-responsive PolymersPh-sensitive PolymersPolymer Molecular CharacteristicsPolymer-monomer RatioSolubility-ph Relationships
Abstract Block copolymers of poly(glycidol)‐ b ‐poly( 4 ‐vinylpyridine) were obtained by ATRP of 4‐vinylpyridine initiated by ω‐(2‐chloropropionyl) poly(glycidol) macroinitiators. By changing the monomer/macroinitiator ratio in the synthesis polymers with varied P4VP/PGl molar ratio were obtained. The obtained block copolymers showed pH sensitive solubility. It was found that the linkage of a hydrophilic poly(glycidol) block to a P4VP influenced the p K a value of P4VP. DLS measurements showed the formation of fully collapsed aggregates exceeding pH 4.7. Above this pH values the collapsed P4VP core of the aggregates was stabilized by a surrounding hydrophilic poly(glycidol) corona. The size of the aggregates depended significantly upon the composition of the block copolymers. © 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 1782–1794, 2009
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Stimuli-reponsive polymers and their bioconjugates
Eun Seok Gil, Simon Hudson · Progress in Polymer Science · 2004 · 2.3K citations
Younsoo Bae, Shigeto Fukushima, Atsushi Harada et al. · Angewandte Chemie International Edition · 2003 · 1.3K citations