• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Polymer science, Series C >Stabilization of Gold Nanospheres and Nanorods in Diblock Copolymers of Styrene and Vinylpyridine
【24h】

Stabilization of Gold Nanospheres and Nanorods in Diblock Copolymers of Styrene and Vinylpyridine

机译：苯乙烯和乙烯基吡啶二嵌段共聚物中金纳米球和纳米棒的稳定化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Composites based on microphase-separated diblock copolymers of styrene with vinylpyridine and gold nanoparticles, in which the block copolymers play simultaneously both the role of a stabilizer preventing the aggregation of nanoparticles and a matrix providing their selective arrangement within domains of the predefined type, are obtained for the first time. The suggested approach implies no use of additional stabilizers and is efficient for both initially organic dispersed small (similar to 5 nm) spheres and hydrasols of larger (9 x 30 nm) rodlike nanoparticles. Nanospheres are introduced into the composites via replacement of a labile stabilizer used in synthesis with the diblock copolymer, while nanorods synthesized in aqueous media by the two-stage method are incorporated via phase transfer mediated by the diblock copolymer. Films capable of microphase separation leading to the formation of vinylpyridine cylindrical domains with a diameter of tens nanometers are spin-coated from the obtained composites. The content of nanoparticles in the composites is up to 5 wt %; they are dispersed and arranged predominantly within vinylpyridine domains, with nanospheres being localized near domain boundaries, while nanorods being mainly oriented perpendicularly to the axis of cylinders.
机译：基于苯乙烯与乙烯基吡啶和金纳米颗粒的苯乙烯与金纳米颗粒的复合材料，其中嵌段共聚物同时起到防止纳米颗粒的聚集的稳定剂的作用和提供其在预定义型结构域内的基质的基质中的作用首次。建议的方法意味着不使用额外的稳定剂，并且初始有机分散的小（类似于5nm）球体和较大（9×30nm）棒状纳米颗粒的水溶液是有效的。通过替代与二嵌段共聚物合成的不稳定稳定剂替换在合成中使用的纳米球引入复合材料中，而通过两级方法在水性介质中合成的纳米棒通过由二嵌段共聚物介导的相移掺入。能够使膜分离的薄膜导致形成具有数十纳米直径的乙烯基吡啶圆柱形结构域的形成是从所得复合材料中旋涂的。复合材料中纳米颗粒的含量高达5wt％;它们主要分散并主要在乙烯基吡啶结构域内排列，纳米球在畴边界附近局部化，而纳米棒主要垂直于圆柱轴的轴线定向。

著录项

  • 来源
    《Polymer science, Series C》 |2018年第1期|共8页
  • 作者

    Derikov Y. I.; Abetz C.; Shandryuk G. A.; Talroze R. V.; Ezhov A. A.; Abetz V.; Kudryavtsev Y. V.; Osipov M. A.;

  • 作者单位

    Russian Acad Sci Topchiev Inst Petrochem Synth Moscow 119991 Russia;

    Helmholtz Zentrum Geesthacht Inst Polymer Res Max Planck Str 1 D-21502 Geesthacht Germany;

    Russian Acad Sci Topchiev Inst Petrochem Synth Moscow 119991 Russia;

    Russian Acad Sci Topchiev Inst Petrochem Synth Moscow 119991 Russia;

    Russian Acad Sci Topchiev Inst Petrochem Synth Moscow 119991 Russia;

    Helmholtz Zentrum Geesthacht Inst Polymer Res Max Planck Str 1 D-21502 Geesthacht Germany;

    Russian Acad Sci Topchiev Inst Petrochem Synth Moscow 119991 Russia;

    Russian Acad Sci Topchiev Inst Petrochem Synth Moscow 119991 Russia;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 有机化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号