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首页> 外文期刊>RSC Advances >Composite PS-b-P4VP/Ag and PS-b-P4VP/Au thin films fabricated via a multilevel self-assembly process
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Composite PS-b-P4VP/Ag and PS-b-P4VP/Au thin films fabricated via a multilevel self-assembly process

机译：复合PS-B-P4VP / AG和PS-B-P4VP / Au薄膜通过多级自组装过程制造

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摘要

Thin composite films with paralleled nanowire or planar sheet morphologies doped with Ag or Au species were fabricated at the air/liquid interface. The fabrication process involves a series of steps, including the mass transfer of polystyrene-b-poly(4-vinylpyridine) (PS-b-P4VP) across a liquid/liquid interface between a DMF/CHCl3 solution and an aqueous solution containing either Ag+ or AuCl4-, self-assembly of the PS-b-P4VP and the inorganic species in the mixed DMF and water solution, and adsorption and further self-organization of the formed aggregates at the air/liquid interface. Noble metal ions and nanoparticles that formed during the fabrication process can be incorporated into the polymer matrices directly. The film morphology can be controlled through tuning the existential state and critical packing parameter of the polymer molecules. It was also found that the film morphology of PS-b-P4VP is distinctly different from that of PS-b-P2VP, indicating the great influence of the molecular structure on the self-assembly behavior of block copolymers. In addition, these composite thin films exhibit effective heterogeneous catalytic properties for hydrogenation of nitroaromatics in aqueous solutions.
机译：在空气/液体界面处制造掺杂有Ag或Au物种的平行纳米线或平面片形态的薄复合膜。制造过程涉及一系列步骤，包括在DMF / CHCl 3溶液和含有Ag +的水溶液之间的液/液界面上的聚苯乙烯-B-聚（4-乙烯基吡啶）（PS-B-P4VP）的传质。或者，PS-B-P4VP的AuCl4-，自组装和混合DMF和水溶液中的无机物种，以及在空气/液体界面处的形成聚集体的吸附和进一步的自组织。在制造过程中形成的贵金属离子和纳米颗粒可以直接掺入聚合物基质中。可以通过调节聚合物分子的存在状态和关键填充参数来控制膜形态。还发现PS-B-P4VP的薄膜形态与PS-B-P2VP明显不同，表明分子结构对嵌段共聚物的自组装行为的影响很大。此外，这些复合薄膜在水溶液中表现出有效的非均相催化性质，用于硝基甲酰基的氢化。

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  • 来源
    《RSC Advances》 |2016年第65期|共7页
  • 作者

    Zhao Xingjuan; Zhang Xiaokai; Liu Hong-Guo;

  • 作者单位

    Shandong Univ Educ Minist Key Lab Colloid &

    Interface Chem Jinan 250100 Peoples R China;

    Shandong Normal Univ Coll Phys &

    Elect Jinan 250014 Peoples R China;

    Shandong Univ Educ Minist Key Lab Colloid &

    Interface Chem Jinan 250100 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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