| 以PAMAM树形分子为模板制备Pd纳米簇合物 |
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| 引用本文： | 卢文婷,罗运军,李国平,张欣茜,靳玉娟.以PAMAM树形分子为模板制备Pd纳米簇合物[J].高等学校化学学报,2009,30(7):1459. |
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| 作者姓名： | 卢文婷 罗运军 李国平 张欣茜 靳玉娟 |
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| 作者单位： | 北京理工大学材料科学与工程学院, 北京 100081 |
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| 摘 要： | 以酯端基聚酰胺-胺树形分子(PAMAM)为模板在甲醇溶剂中制备了Pd纳米簇合物. 采用紫外-可见分光光度法和红外光谱法研究了Pd2+与树形分子的作用机理, 结果表明, Pd2+与树形分子内部胺基基团(主要为叔胺基)产生了络合作用. 采用硼氢化钠还原法制备了树形分子包裹的、粒径为2 nm的球形面心立方Pd纳米簇合物. 紫外-可见吸收光谱研究结果表明, Pd2+与树形分子的摩尔比越小, 生成的纳米簇合物尺寸越小; 由于高代数树形分子具有封闭结构, 且其内部配体数目较多, 采用较高代数的树形分子(5.5代)比低代数(3.5代)更有利于得到尺寸小、分散性较好的Pd纳米簇合物.
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| 关 键 词： | 聚酰胺-胺(PAMAM)树形分子 模板法 Pd纳米簇合物 络合作用 |
| 收稿时间： | 2008-10-10 |
Preparation and Characterization of Pd Nanoclusters Templated by PAMAM Dendrimers |
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| LU Wen-Ting,LUO Yun-Jun,LI Guo-Ping,ZHANG Xin-Qian,JIN Yu-Juan.Preparation and Characterization of Pd Nanoclusters Templated by PAMAM Dendrimers[J].Chemical Research In Chinese Universities,2009,30(7):1459. |
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| Authors: | LU Wen-Ting LUO Yun-Jun LI Guo-Ping ZHANG Xin-Qian JIN Yu-Juan |
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| Institution: | School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | Pd nanoclusters templated by methoxycarbonyl-terminated poly(amidoamine)(PAMAM) dendri-mers were successfully prepared in methanol. The complexation between Pd2+ ions and dendrimers was investigated by UV-Vis and FTIR spectophotometric method. These results show that Pd2+ ions are coordinated with the interior amine groups of PAMAM dendrimers. As shown in HRTEM images, reduction with NaBH4 resulted in well-dispersed and nearly size monodisperse Pd nanoclusters(2 nm, FCC) encapsulated in dendrimers. The inve... |
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| Keywords: | Poly(amidoamine)(PAMAM) dendrimer Template method Pd nanocluster Complexation |
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