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首页> 外文期刊>Chemistry: A European journal >One-Step Photochemical Green Synthesis of Water-Dispersible Ag, Au, and Au@Ag Core-Shell Nanoparticles
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One-Step Photochemical Green Synthesis of Water-Dispersible Ag, Au, and Au@Ag Core-Shell Nanoparticles

机译：水分散Ag，Au和Au @ Ag核 - 壳纳米粒子的一步式光化学绿色合成

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摘要

A simple and green synthetic protocol for the rapid and effective preparation of Ag, Au and Au@Ag core-shell nanoparticles (NPs) is reported based on the light irradiation of a biocompatible, water-soluble dextran functionalized with benzophenone (BP) in the presence of AgNO_3, HAuCl_4, or both. Photoactivation of the BP moiety produces the highly reducing ketyl radicals through fast (<50 ns) intramolecular H-abstraction from the dextran scaffold, which, in turn, ensures excellent dispersibility of the obtained metal NPs in water. The antibacterial activity of the AgNPs and the photothermal action of the Au@Ag core-shell are also shown.
机译：基于用二苯甲酮（BP）官能化的生物相容的水溶性葡聚糖的光照射，报道了一种简单而有效制备AG，Au和Au和Au @ Ag核 - 壳纳米粒子（NPS）的简单和绿色的合成方案。 Agno_3，Haucl_4或两者的存在。 BP部分的光活化通过从葡聚糖支架中通过快速（<50ns）的分子内H拔种产生高度还原的酮基，这反过来确保所得金属NPS在水中优异的分散性。 还示出了AgNP的抗菌活性和Au @ Ag核壳的光热作用。

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  • 来源
    《Chemistry: A European journal》 |2019年第64期|共6页
  • 作者

    Marta Perez-Lloret; Aurore Fraix; Salvatore Petralia; Sabrina Conoci; Virginie Tafani; Giovanna Cutrone; Antonio Vargas-Berenguel; Ruxandra Gref; Salvatore Sortino;

  • 作者单位

    Laboratory of Photochemistry Department of Drug Sciences University of Catania 95125 Catania (Italy);

    Laboratory of Photochemistry Department of Drug Sciences University of Catania 95125 Catania (Italy);

    STMicroelectronics Stradale Primosole 50 95121 Catania (Italy);

    STMicroelectronics Stradale Primosole 50 95121 Catania (Italy);

    Centre International de Recherche en Infectiologie (CIRI) INSERM U1111 Hospices Civils de Lyon Centre de Biologie Nord Laboratoire de Bactériologie Hipital de la Croix-Rousse 10 Grande Rue de la Croix Rousse 69004 Lyon (France);

    Department of Chemistry and Physics University of Almería Crta. de Sacramento s/n 04120 Almería (Spain);

    Department of Chemistry and Physics University of Almería Crta. de Sacramento s/n 04120 Almería (Spain);

    Institut des Sciences Moléculaires d'Orsay Bureau 210 B.timent 520 Rue A. RiviHre 91400 Orsay (France);

    Laboratory of Photochemistry Department of Drug Sciences University of Catania 95125 Catania (Italy);

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

    core-shell systems; nanoparticles; photochemistry; radicals;

    机译：核心壳系统;纳米粒子;光化学;自由基;

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