Harnessed Dopant Block Copolymers Assist Decorating Membrane Pores: A Dissipative Particle Dynamics Study.,Macromolecular Rapid Communications

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Harnessed Dopant Block Copolymers Assist Decorating Membrane Pores: A Dissipative Particle Dynamics Study.
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2019-12-19 , DOI: 10.1002/marc.201900561
Zhikun Wang ₁ , Shuangqing Sun _{1,

2} , Qiang Lyu ₁ , Meng Cheng ₁ , Hongbing Wang ₁ , Chunling Li _{1,

2} , Haoyan Sha ₃ , Roland Faller ₃ , Songqing Hu _{1,

2}

Affiliation

Self-assembly of asymmetric block copolymers (BCPs) around active pore edges has emerged as an important strategy to produce smart membranes with tunable pathways for solute transport. However, thus far, it is still challenging to manipulate pore shape and functionality for directional transformation under external stimuli. Here, a versatile strategy by mesoscale simulations to design stimuli-responsive pores with various edge decorations in hybrid membranes is reported. Dopant BCPs are used as decorators to stabilize pore edges and extend their function in reconfiguring pores in response to repeated membrane stretching/shrinking caused by external stimuli. The decoration morphologies are predictable since the assemblies of dopant BCPs around pore edges are closely related to their self-assemblies in solution. The coassembly between different BCPs in the hybrid membrane for the control of pore morphology is featured, and the parameter settings, including block incompatibility and molecular architecture for the construction of a specific pore, are determined. Results show that harnessed dopant BCPs in the hybrid membrane can enhance pore formation and induce directional pore shape and functionality transformation. Diversified pore decorations exhibit potential that can be further explored in selective solute transport and the design of stimuli-responsive smart nanodevices.

中文翻译：

利用掺杂剂嵌段共聚物辅助装饰膜孔：耗散粒子动力学研究。

围绕活性孔边缘的不对称嵌段共聚物（BCP）的自组装已成为生产具有可调节溶质转运途径的智能膜的重要策略。然而，到目前为止，在外部刺激下操纵孔的形状和功能以进行定向转化仍然具有挑战性。在此，报道了通过中尺度模拟的通用策略来设计在混合膜中具有各种边缘装饰的刺激响应性孔。掺杂剂BCP用作装饰剂，以稳定孔边缘并响应外部刺激引起的反复膜拉伸/收缩而扩展其在重构孔中的功能。装饰形态是可预测的，因为围绕孔边缘的掺杂剂BCP的组装与其在溶液中的自组装密切相关。杂化膜中不同BCP之间的共组装用于控制孔的形态，其特征在于确定参数设置，包括嵌段不相容性和用于构建特定孔的分子结构。结果表明，杂化膜中利用的掺杂剂BCP可以增强孔的形成并诱导定向孔的形状和功能转变。多样化的毛孔装饰具有潜力，可以在选择性溶质运输和刺激响应型智能纳米设备的设计中进一步探索。结果表明，杂化膜中利用的掺杂剂BCP可以增强孔的形成并诱导定向孔的形状和功能转变。多样化的毛孔装饰具有潜力，可以在选择性溶质运输和刺激响应型智能纳米设备的设计中进一步探索。结果表明，杂化膜中利用的掺杂剂BCP可以增强孔的形成并诱导定向孔的形状和功能转变。多样化的毛孔装饰具有潜力，可以在选择性溶质运输和刺激响应型智能纳米设备的设计中进一步探索。

更新日期：2019-12-20

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