In this study, dumbbell-like linear-dendritic copolymers based on polyethylene glycols with aspartic dendrons were synthesized. The ionic complexes of these oppositely charged copolymers exhibited self-assembly in water and methanol and formed gels in low polar solvents. Various characterization techniques indicated a lamellar structure of the PEG-copolymer complexes, with the thickness, degree of order, and crystallinity of the PEG microphase determined by the structure of the branched block.
Here we report on the synthesis of dumbbell-like linear-dendritic copolymers based on polyethylene glycols bearing aspartic dendrons with terminal amino and carboxylic groups. The ionic complexes of such oppositely charged copolymers demonstrate the ability to self-assemble in water and methanol and form gels in low polar solvents. Differential scanning calorimetry, polarizing optical and atomic force microscopy, and X-ray diffraction methods indicate a lamellar structure of PEG-copolymer complexes. The thickness of the layers, degree of order, and crystallinity of the PEG microphase are determined by the structure of the branched block.
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