Anisotropic Nano-/Microparticles from Diversified Copolymers by Solvent-Mediated Self-Assembly
Anisotropic Nano-/Microparticles from Diversified Copolymers by Solvent-Mediated Self-Assembly
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通过溶剂介导的自组装从多样化共聚物中制备各向异性纳米/微粒
DOI：
10.1021/acs.langmuir.9b02126
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发表时间：
2019
期刊：
影响因子：
3.9
通讯作者：
Rongmin Wang
中科院分区：
文献类型：
--
作者：
Bin Wang;Lingyun Jia;Fawei Wang;Yufeng He;Pengfei Song;Rongmin Wang
利用共聚物有效合成各向异性纳/微米粒子（AP）在纳米材料和纳米技术领域具有重要意义。然而，实现的形态，组成，性能和粒径的各向异性的纳米/微米粒子（AP）与多样化的共聚物的调控是困难的，由于复杂的机制和形成条件。在这项工作中，一个通用的一锅溶剂介导的自组装（SmSa）策略已被提出用于简易的一锅合成形状可调的各向异性纳米/微粒（StAP）。此外，通过与形态和元素分布相关的多种表征方法确定StAPs的形成机制。结果表明，StAPs的各向异性结构与不同结构域的聚合物嵌段所赋予的聚（甲基丙烯酸-甲基丙烯酸甲酯-丙烯酸丁酯）（L1）和聚（丙烯酸丁酯-苯乙烯）（L2）聚合物链的性质密切相关。因此，在增大溶剂极性和聚乙烯吡咯烷酮对L2的强吸附作用的作用下，刚性疏水L2聚合物链可以在由柔性两亲性L1和溶剂组成的胶束中有序组装.此外，开发的多功能SmSa策略和获得的StAP在纳米科学和纳米技术的发展中发挥着至关重要的作用。特别是考虑到其在不同pH值下的可调节乳化性能，以及通过荧光或其他组分进行进一步修饰的许多位点，它可以用于合成各种功能材料。
Effective synthesis of anisotropic nano-/microparticles (APs) by the copolymers is of great significance in nanomaterials and nanotechnology. However, achieving regulation of the morphology, composition, property, and particle size of anisotropic nano-/microparticles (APs) with diversified copolymers is difficult due to complex mechanism and formation conditions. In this work, a versatile one-pot solvent-mediated self-assembly (SmSa) strategy had been proposed for the facile one-pot synthesis of shape-tunable anisotropic nano-/microparticles (StAPs). In addition, the formation mechanism of StAPs was determined through numerous characterization methods related to morphology and element distribution. The results revealed that the anisotropic architectures of StAPs were closely related to the nature of poly(methylacrylic acid-methyl methacrylate-butyl acrylate) (L1) and poly(butyl acrylate-styrene) (L2) polymer chains imparted by polymer blocks of different domains. Therefore, the ordered assembly of the rigid and hydrophobic L2polymer chains in micelles consisting of the flexible and amphiphilic L1and solvent could be successfully carried out under the mediation of increasing solvent polarity and the strong adsorption of poly(vinylpyrrolidone) for L2. Furthermore, the developed versatile SmSa strategy and the obtained StAPs play an essential role in the development of nanoscience and nanotechnology. Particularly given its adjustable emulsifying properties at different pH values, as well as numerous sites for further modification by fluorescent or other components, it can be employed to synthesize a wide range of functional materials.