Heterometal Assembly in Dendritic Polyphenylazomethines
Heterometal Assembly in Dendritic Polyphenylazomethines
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DOI：
10.1246/bcsj.80.1563
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发表时间：
2007-08
影响因子：
4
通讯作者：
Kensaku Takanashi;A. Fujii;Reina Nakajima;H. Chiba;M. Higuchi;Y. Einaga;Kimihisa Yamamoto
中科院分区：
文献类型：
--
作者：
Kensaku Takanashi;A. Fujii;Reina Nakajima;H. Chiba;M. Higuchi;Y. Einaga;Kimihisa Yamamoto
先进纳米材料强烈需要精细控制的金属有机杂化。树枝状聚合物是高度支化的有机大分子，具有围绕中心核心的连续层或“一代”分支单元。金属有机杂化版本也可以通过将金属离子或金属簇捕获在树枝状聚合物的空隙中来生产。在这里，我们报告了一种形成树枝状有机结构的技术，其中包括各种金属，通过径向逐步络合来精细控制金属盐的数量和位置。 FeCl 3 、GaCl 3 、VCl 3 和SnCl 2 分别修饰在第四代苯基偶氮甲碱树枝状聚合物的第一、第二、第三和第四层上。这些逐步络合和异金属组装也得到了 TEM 观察、 57 Fe 穆斯堡尔光谱、XPS 测量和 NMR 光谱的支持。
Fine-controlled metal-organic hybridization is strongly desired for advanced nano-materials. Dendrimers are highly branched organic macromolecules with successive layers or "generations" of branch units surrounding a central core. Metal-organic hybrid versions have also been produced by trapping metal ions or metal clusters within the voids of dendrimers. Here, we report a technique to form a dendritic organic structure, which includes various metals, with fine control over the number and location of the metal salts through a radial stepwise complexation. FeCl 3 , GaCl 3 , VCl 3 , and SnCl 2 were decorated on a phenylazomethine dendrimer with 4th generations at the first, second, third, and forth layers, respectively. These stepwise complexation and heterometal assembling were also supported by TEM observation, 57 Fe Mossbauer spectroscopy, XPS measurement, and NMR spectroscopy.