Template synthesis of nanoparticle arrays of gold using highly ordered functional mesoporous silica thin films with high amino-groups content
Template synthesis of nanoparticle arrays of gold using highly ordered functional mesoporous silica thin films with high amino-groups content
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DOI：
10.1016/j.micromeso.2011.05.019
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发表时间：
2011-11
影响因子：
5.2
通讯作者：
Jingyue Fang;S. Qin;Shengli Chang;Xueao Zhang
中科院分区：
文献类型：
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作者：
Jingyue Fang;S. Qin;Shengli Chang;Xueao Zhang
周期性排列的金纳米粒子阵列（GNPAs）具有广泛的应用前景。利用氯金酸与氨基之间的中和反应，在表面活性剂十六烷基三甲基溴化铵（CTAB）的作用下，在氨基功能化介孔氧化硅薄膜（AF-MSTFs）的孔道内自组装GNPAs。采用FTIR、XRD和TEM对样品进行了表征。结果表明，量子点的平均直径是由高度有序的孔道控制的。GNPAs/AF-MSTF纳米复合材料的紫外-可见吸收光谱随着中和反应时间的延长而蓝移，吸收峰强度降低，表明GNPs的存在，并显示出可调的光学性质。
The periodic disposed gold nanoparticle arrays (GNPAs) are very useful for wide range applications. Employing the neutralization reaction between chloroauric acid and amino groups, GNPAs were self-assembled inside pore channels of amino-functionalized mesoporous silica thin films (AF-MSTFs) which were produced by using the surface active agent CTAB (cetyltrimethyl ammonium bromide). The AF-MSTF samples were characterized by FTIR, XRD and TEM. The results show that the average diameter of quantum dots was controlled by the highly ordered pore channels. UV–vis absorption spectra of the GNPAs/AF-MSTF nanocomposites exhibit blue-shift and intensity decrease of absorption peaks as the neutralization reaction time decreases, representing the existence of GNPs and revealing an adjustable optical property.