温度导向的自组装：直接在水中从蝌蚪状到多臂聚合物纳米结构
Temperature-Directed Self-Assembly: from Tadpole to Multi-Arm Polymer Nanostructures Directly in Water.
作者信息
Bobrin Valentin A, Chen Sung-Po R, Jia Zhongfan, Monteiro Michael J
机构信息
Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane QLD 4072, Australia.
出版信息
ACS Macro Lett. 2017 Oct 17;6(10):1047-1051. doi: 10.1021/acsmacrolett.7b00589. Epub 2017 Sep 12.
Driving amphiphilic block copolymers to self-assemble into asymmetric and equilibrium nanostructures remains a challenge. Here, we use the temperature-directed morphology transformation (TDMT) method to tailor the self-assembly of block copolymers into asymmetric nanoparticles with either a single (i.e., tadpole) or multi-arm geometry directly in water and at scale (>10 wt % of polymer). These nanostructures were close to or at their equilibrium morphology and not a transient kinetically trapped structure since they did not change with the addition of high amounts of plasticizer, could be freeze-dried and rehydrated without any structural rearrangement.
驱使两亲性嵌段共聚物自组装成不对称且平衡的纳米结构仍然是一项挑战。在此，我们使用温度导向形态转变（TDMT）方法，将嵌段共聚物直接在水中且大规模地（>聚合物重量的10%）自组装成具有单臂（即蝌蚪状）或多臂几何形状的不对称纳米颗粒。这些纳米结构接近或处于其平衡形态，而非瞬态动力学捕获结构，因为它们不会因添加大量增塑剂而改变，可进行冷冻干燥并重新水合，且不会发生任何结构重排。
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