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首页> 外文期刊>Advanced Functional Materials >Hierarchic Nanostructure for Auto-Modulation of Material Release: Mesoporous Nanocompartment Films
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Hierarchic Nanostructure for Auto-Modulation of Material Release: Mesoporous Nanocompartment Films

机译：自动调节材料释放的分层纳米结构：中孔纳米隔室膜

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摘要

The preparation of mesoporous nanocompartment films composed of both hollow silica capsules and silica particles by using layer-by-layer (LbL) adsorption is described. The resultant nanocompartment films exhibit stepwise release of encapsulated water molecules without application of external stimuli. The hollow hierarchic pore structure of the silica capsules, including their internal void and mesoporous walls, is a key factor for the regulation and stepwise release of water, and is probably caused by the non-equilibrated concurrent evaporation of material from the mesopore and capillary penetration into the mesopores. The number of release steps and rate of release can be tuned by variation of several parameters including water content, ambient temperature, layer multiplicity, and co-adduct particle size. Application of the mesoporous nanocompartment films for the release of substances, including therapeutic agents and fragrances, indicates that the stepwise material release can be applied for a wide range of liquid substances. The films should lead to a novel material release system useful even for biomedical applications capable of controlled and sustained delivery of drug molecules.
机译：描述了通过使用逐层（LbL）吸附制备由中空二氧化硅囊和二氧化硅颗粒组成的介孔纳米隔室膜。所得的纳米隔室膜表现出逐步释放包封的水分子而无需施加外部刺激。二氧化硅胶囊的空心分层孔隙结构（包括其内部空隙和中孔壁）是调节和逐步释放水的关键因素，并且可能是由于中孔中物质的不平衡同时蒸发和毛细管渗透引起的进入中孔。释放步骤的数量和释放速率可通过改变几个参数来调整，这些参数包括水含量，环境温度，层的多重性和共加合物粒径。介孔纳米隔离膜用于释放包括治疗剂和香料在内的物质的过程表明，逐步释放物质可用于多种液体物质。薄膜应导致一种新颖的材料释放系统，该系统甚至可用于能够控制和持续递送药物分子的生物医学应用。

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  • 来源
    《Advanced Functional Materials》 |2009年第11期|1792-1799|共8页
  • 作者

    Qingmin Ji; Somobrata Acharya; Jonathan P. Hill; Ajayan Vinu; Suk Bon Yoon; Jong-Sung Yu; Kazutami Sakamoto; Katsuhiko Ariga;

  • 作者单位

    World Premier International (WPI) Research Center for Materials Nanoarchitectonics National Institute for Materials Science (NIMS) 1-1 Namiki, Tsukuba, Ibaraki, 305-0044 (Japan);

    World Premier International (WPI) Research Center for Materials Nanoarchitectonics National Institute for Materials Science (NIMS) 1-1 Namiki, Tsukuba, Ibaraki, 305-0044 (Japan);

    World Premier International (WPI) Research Center for Materials Nanoarchitectonics National Institute for Materials Science (NIMS) 1-1 Namiki, Tsukuba, Ibaraki, 305-0044 (Japan);

    World Premier International (WPI) Research Center for Materials Nanoarchitectonics National Institute for Materials Science (NIMS) 1-1 Namiki, Tsukuba, Ibaraki, 305-0044 (Japan);

    Department of Advanced Materials Chemistry Korea University 208 Seochang, jochiwon, ChungNam 339-700 (Korea);

    Department of Advanced Materials Chemistry Korea University 208 Seochang, jochiwon, ChungNam 339-700 (Korea);

    Tokyo University of Science 2641 Yamazaki, Noda, Chiba 278-8510 (Japan);

    World Premier International (WPI) Research Center for Materials Nanoarchitectonics National Institute for Materials Science (NIMS) 1-1 Namiki, Tsukuba, Ibaraki, 305-0044 (Japan);

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