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Biodegradable polymer vesicle for drug delivery is reported. Poly(ɛ-caprolactone)-block-poly(ethyl ethylene phosphate) with well-defined structure (PCL 150 -b-PEEP 30 ) has been prepared by ring-opening polymerization. It forms vesicles in aqueous solution using the thin-film hydration method and further exclusion of the as-formed vesicles results in vesicles at nano-size, demonstrated...
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