Fabrication of copper oxide dumbbell-like architectures via the hydrophobic interaction of adsorbed hydrocarbon chains.
Fabrication of copper oxide dumbbell-like architectures via the hydrophobic interaction of adsorbed hydrocarbon chains.
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DOI：
10.1021/la803276z
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发表时间：
2009-02
期刊：
影响因子：
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通讯作者：
Haihua Wang;Q. Shen;Xinping Li;Fenglin Liu
中科院分区：
文献类型：
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作者：
Haihua Wang;Q. Shen;Xinping Li;Fenglin Liu
本文将合成的十二烷基硫酸铜（Cu(DS)2）表面活性剂作为一种特殊的金属离子源，用于氧化铜（CuO）结构的形态控制。在制备过程中，首次在60.0℃的温度下观察到带状层状的碱性铜盐中间体。在没有或存在十二醇（DOH）的情况下，Cu(DS)2可以与氢氧化钠反应形成哑铃状的CuO纳米颗粒结构。将DOH分子掺入表面活性剂离子的吸附单分子层可以极大地扩大哑铃大小的长度，这可能取决于DOH- ds络合物的形成。这表明中间带的模板有效性以及吸附烃链的疏水相互作用可能是CuO哑铃形成过程的原因。有趣的是，在反应体系中加入氯化钠后，CuO哑铃的形态发生了变化，先是双锚，然后是中心有两个孔的双球。这进一步表明，悬垂碳氢链的疏水相互作用为材料制造提供了一个重要的途径。
In this paper, the synthesized surfactant of copper dodecyl sulfate (Cu(DS)2) was used as a special metal-ion source for the morphological control of copper oxide (CuO) architectures. During the fabrication processes, the ribbon-shaped intermediates of basic copper salt with lamellar structures were observed at 60.0 degrees C for the first time. In the absence or presence of dodecanol (DOH), Cu(DS)2 could react with sodium hydroxide to form dumbbell-like architectures of CuO nanoparticles. The incorporation of DOH molecules into the adsorption monolayers of surfactant ions could greatly enlarge the dumbbell size in length, probably depending upon the formation of the DOH-DS complex. These indicated that the template effectiveness of the intermediate ribbons, together with the hydrophobic interactions of adsorbed hydrocarbon chains, should account for the formation process of CuO dumbbells. Interestingly, the addition of sodium chloride into the reaction systems could induce the morphological change of CuO dumbbells to the twin-anchors and then to the twin-spheres with two holes in the center. This further suggests that the hydrophobic interaction of pendent hydrocarbon chains provides an important approach for material fabrication purposes.