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Constructing one dimensional assembly of poly methylacrylic acid capping gold nanoparticles for selective and colorimetric detection of aminoglycoside antibiotics

机译:构建聚甲基丙烯酸覆盖金纳米粒子的一维组装,用于选择性和比色氨基糖苷抗生素检测

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摘要

Here, a self-assembly driven colorimetric method is described for detecting aminoglycoside antibiotics (AMGs) upon nanochain formation of poly methylacrylic acid capping gold nanoparticles (PMMA-@-Au NPs). After addition of streptomycin, the development of new plasmonic coupling absorption in the higher-wavelength region, companied with a prominent color change from wine red to blue, and TEM observation clearly reveal formation of a chain-like nanostructure of PMMA-@-Au NPs. The amine-groups on the AMGs can serve as a molecular bridge for electrostatic coupling with two carboxylic acids from adjacent particles to drive PMMA-@-Au NPs with chain-like arrays, where the molecular linkers are also target analytes. The selective detection can be achieved by the UV spectra of AMGs, including gentamicin, neomycin and kanamycin, with other types of antibiotics. Finally, the interference from metal ions competition can be eliminated by adding a strong metal ion chelator such as EDTA.
机译:这里,描述了一种自组装驱动的比色方法,用于检测聚氨基糖苷抗生素(AMGS)在聚甲基丙烯酸覆盖金纳米粒子(PMMA - AU NPS)的形成时。 在加入链霉素后,在较高波长区域中的新等离子体耦合吸收的发展,伴随着从葡萄酒红色到蓝色的突出色彩变化,并且TEM观察清楚地揭示了PMMA的链状纳米结构的形成 - @ - au nps 。 AMGS上的胺基可以用作来自相邻颗粒的两个羧酸静电偶联的分子桥,以驱动PMMA - α - Au nps,其中分子接头也是靶分析物。 选择性检测可以通过AMG的紫外光谱,包括庆大霉素,新霉素和卡那霉素,具有其他类型的抗生素。 最后,通过添加强金属离子螯合剂如EDTA,可以消除金属离子竞争的干扰。

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  • 来源
    《RSC Advances》 |2015年第81期|共7页
  • 作者单位

    Henan Univ Sci &

    Technol Coll Chem Engn &

    Pharmaceut Luoyang 471023 Peoples R China;

    Henan Univ Sci &

    Technol Coll Chem Engn &

    Pharmaceut Luoyang 471023 Peoples R China;

    Henan Univ Sci &

    Technol Coll Chem Engn &

    Pharmaceut Luoyang 471023 Peoples R China;

    Henan Univ Sci &

    Technol Coll Chem Engn &

    Pharmaceut Luoyang 471023 Peoples R China;

    Henan Univ Sci &

    Technol Coll Chem Engn &

    Pharmaceut Luoyang 471023 Peoples R China;

    Henan Univ Sci &

    Technol Coll Chem Engn &

    Pharmaceut Luoyang 471023 Peoples R China;

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

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