One-Step Assembly of Coordination Complexes for Versatile Film and Particle Engineering
One-Step Assembly of Coordination Complexes for Versatile Film and Particle Engineering
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DOI：
10.1126/science.1237265
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发表时间：
2013-07-12
期刊：
影响因子：
56.9
通讯作者：
Caruso, Frank
中科院分区：
文献类型：
--
作者：
Ejima, Hirotaka;Richardson, Joseph J.;Caruso, Frank
薄膜和粒子工程的简易和多功能的策略的发展是巨大的科学兴趣。然而，很少有方法可以共形地涂覆不同组成、尺寸、形状和结构的基底。我们报告的一步涂层的各种接口使用天然多酚和Fe（III）离子的配位络合物。膜的形成是由多酚的吸附引发的，并通过pH依赖性的多价配位键合来指导。在一系列平面以及无机，有机和生物颗粒模板上进行水沉积，展示了一种用于生产结构多样的薄膜和可以拆卸的胶囊的极其快速的技术。组装过程的简易性、低成本和可扩展性，加上pH响应性和可忽略的细胞毒性，使这些膜成为生物医学和环境应用的潜在候选者。
The development of facile and versatile strategies for thin-film and particle engineering is of immense scientific interest. However, few methods can conformally coat substrates of different composition, size, shape, and structure. We report the one-step coating of various interfaces using coordination complexes of natural polyphenols and Fe(III) ions. Film formation is initiated by the adsorption of the polyphenol and directed by pH-dependent, multivalent coordination bonding. Aqueous deposition is performed on a range of planar as well as inorganic, organic, and biological particle templates, demonstrating an extremely rapid technique for producing structurally diverse, thin films and capsules that can disassemble. The ease, low cost, and scalability of the assembly process, combined with pH responsiveness and negligible cytotoxicity, makes these films potential candidates for biomedical and environmental applications.