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We reported a novel poly(ether amine) (PEAC) containing poly(ethylene oxide) (PEO) short blocks and coumarin units, which was synthesized by nucleophilic addition/ring-opening polymerization of diepoxy and diamine monomers. PEAC can be directly dispersed in aqueous solution as uniformly sized nanoparticles 50-60 nm in diameter. The whole process for aggregation of PEAC was revealed by transmission electron microscopy (TEM) and ultraviolet-visible (UV-vis) spectra. The results show that these polymeric nanoparticles possess a very sharp response to temperature and light, and can form complex micromicelles with nanoparticles inside.
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Jiang et al. (2009) studied this question.
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