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首页> 外文期刊>RSC Advances >Efficient, robust surface functionalization and stabilization of gold nanorods with quaternary ammonium-containing ionomers as multidentate macromolecular ligands
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Efficient, robust surface functionalization and stabilization of gold nanorods with quaternary ammonium-containing ionomers as multidentate macromolecular ligands

机译：具有季铵含铵离聚物的金纳米棒的高效，鲁棒表面官能化和稳定化，如多型大分子配体

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摘要

Surface functionalization of gold nanorods (GNRs) is critical to their applications in various fields. While there are several existing strategies, we report in this article a new general strategy for the surface functionalization of GNRs with quaternary ammonium-containing ionomers as a novel class of multidentate macromolecular surface ligands. A range of tetraalkylammonium-containing hyperbranched polyethylene- and linear poly(n-butyl acrylate)-based ionomers has been specifically designed and employed in the strategy. Acting as multidentate macromolecular analogues of cetyltrimethylammonium bromide (CTAB), the ionomers have been demonstrated to bind onto the GNR surface by displacing the surface-bound CTAB species via ligand exchange to render CTAB-free ionomer-modified GNRs. By properly designing the enabling ionomers, we have shown that the modified GNRs can be endowed with some desired properties, such as excellent dispersibility in various organic solvents, robust stability under multiple rounds (up to 12 investigated) of high-speed centrifugation in organic solvents, amphiphilicity with dispersibility in both aqueous and organic media, fluorescence, and capability in carrying hydrophobic guest species. This strategy thus provides potential new ways for the construction of novel multifunctional GNR nanocomposites.
机译：金纳米棒（GNRS）的表面官能化对它们在各种领域的应用至关重要。虽然存在几种现有策略，我们在本文中报告了GNR与含季铵离聚物的GNR表面官能化的新一般策略，作为新型的多型大分子表面配体。在该策略中专门设计并采用一系列含四烷基铵的超支化聚乙烯 - 和线性聚（正丁基丙烯酸丁酯）的离聚物。作为甲烷基甲基溴化铵（CTAB）的多微小物质相反，已经证明了离聚物通过通过配体交换移位表面结合的CTAB物种来结合到GNR表面上，以使CTAB离聚物改性的GNRs。通过适当地设计促进离聚物，我们已经表明，改性的GNR可以具有一些所需的性质，例如在各种有机溶剂中优异的分散性，在有机溶剂中的高速离心的多轮（最多12次研究）下的鲁棒稳定性，在水性和有机介质中具有分散性的两亲性，荧光和携带疏水性旅客物种的能力。因此，该策略为建造新型多功能GNR纳米复合材料提供了潜在的新方法。

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  • 来源
    《RSC Advances》 |2016年第49期|共17页
  • 作者

    Dong Zhongmin; Xiang Peng; Huang Lingqi; Ye Zhibin;

  • 作者单位

    Laurentian Univ Bharti Sch Engn 935 Ramsey Lake Rd Sudbury ON P3E 2C6 Canada;

    Laurentian Univ Bharti Sch Engn 935 Ramsey Lake Rd Sudbury ON P3E 2C6 Canada;

    Laurentian Univ Bharti Sch Engn 935 Ramsey Lake Rd Sudbury ON P3E 2C6 Canada;

    Laurentian Univ Bharti Sch Engn 935 Ramsey Lake Rd Sudbury ON P3E 2C6 Canada;

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  • 正文语种 eng
  • 中图分类 化学;
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