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首页> 外文期刊>Physical chemistry chemical physics: PCCP >Microscopic characteristics of Janus nanoparticles prepared via a grafting-from reaction at the immiscible liquid interface
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Microscopic characteristics of Janus nanoparticles prepared via a grafting-from reaction at the immiscible liquid interface

机译：Janus纳米粒子的显微镜特性通过嫁接 - 从不混溶的液体界面反应制备

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摘要

The dynamic process of synthesizing Janus nanoparticles (JNPs) at a water/oil two-phase interface using a grafting-from reaction is investigated via dissipative particle dynamics simulations. We find that the interfacial tension, the initial monomer concentration, and the reaction probability can greatly influence the microscopic characteristics of JNP structure. It is difficult to synthesize a symmetric JNP with an equal volume ratio between hydrophilic and hydrophobic parts by grafting-from methods unless the physical chemical conditions in the two phases are strictly symmetric, and there is always a disordered domain on the JNP at a two immiscible solvents interface. Interestingly, for certain routes for synthesizing JNPs with a grafting-from method, the higher interfacial tension between the water and oil phases may enhance the degree of disorder of the grafted chains. The asymmetric initial monomer concentration in solution and the reaction probability can be used to control the syntheses of asymmetric JNPs.
机译：通过耗散粒子动力学模拟研究了使用接枝反应的水/油两相界面在水/油两相界面中合成Janus纳米颗粒（JNP）的动态过程。我们发现界面张力，初始单体浓度和反应概率可以大大影响JNP结构的微观特性。除非两相的物理化学条件严格对称，否则难以从亲水性和疏水性零件之间以相等的体积比合成具有相等体积比的对称JNP，除非两个阶段的物理化学条件是严格对称的，并且在两个不混溶的JNP上总是存在无序域溶剂界面。有趣的是，对于用嫁接从方法合成JNP的一定路线，水和油阶段之间的较高界面张力可以增强接枝链的紊乱程度。溶液中的不对称初始单体浓度和反应概率可用于控制不对称JNP的合成。

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    Li Bing-Yu; Zhao Li; Lu Zhong-Yuan;

  • 作者单位

    Jilin Univ State Key Lab Supramol Struct &

    Mat Inst Theoret Chem Changchun 130021 Jilin Peoples R China;

    Jilin Univ Coll Life Sci Changchun 130012 Jilin Peoples R China;

    Jilin Univ State Key Lab Supramol Struct &

    Mat Inst Theoret Chem Changchun 130021 Jilin Peoples R China;

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  • 正文语种 eng
  • 中图分类 物理学;化学;
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