Towards smart polymeric drug carriers: self-assembling γ-substituted polycaprolactones with highly tunable thermoresponsive behavior
作者:Elizabeth A. Rainbolt、Katherine E. Washington、Michael C. Biewer、Mihaela C. Stefan
DOI:10.1039/c3tb21488e
日期:——
Amphiphilic diblock copolymers comprised of poly[γ-(2-methoxyethoxy)-ε-caprolactone] and thermosensitive polyγ-2-[2-(2-methoxyethoxy)ethoxy]ethoxy-ε-caprolactone} as the hydrophobic and hydrophilic blocks, respectively, were prepared. The copolymers exhibited fully biodegradable backbones and highly tunable thermoresponsive behavior in the range of 31–43 °C. Additionally, the copolymers were shown to self-assemble
报道了一种新型的γ-取代的ε-己内酯单体γ-(2-甲氧基乙氧基)-ε-己内酯的合成和开环聚合。由聚[γ-(2-甲氧基乙氧基)-ε-己内酯]和热敏聚γ-2-[2-(2-甲氧基乙氧基)乙氧基]乙氧基-ε-己内酯}组成的两亲二嵌段共聚物,作为疏水和亲水嵌段,分别准备。该共聚物在31–43°C的温度范围内具有完全可生物降解的主链和高度可调的热响应性。另外,显示出共聚物在其各自的临界胶束浓度以上的水性介质中自组装,数量级为10 -2 g L -1。由于它们的热敏性,自组装性和可生物降解的特性,这些共聚物具有在聚合物胶束药物递送系统中使用的潜力。