| 分子凝胶中可聚合凝胶因子的聚集态及分形结构研究 |
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| 引用本文： | 黎坚,王理,张雪勤,杨亚江.分子凝胶中可聚合凝胶因子的聚集态及分形结构研究[J].化学学报,2003,61(2):171-174. |
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| 作者姓名： | 黎坚 王理 张雪勤 杨亚江 |
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| 作者单位： | 华中科技大学化学系,武汉,430074 |
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| 基金项目： | 国家自然科学基金 (No.2 99740 1 2 )资助项目 |
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| 摘 要： | 利用X射线衍射(XRD)及原子力显微镜(AFM)研究了可聚合凝胶因子4，4′—二 (α-甲基丙烯酰氧基—1，3—亚乙氧基碳基丙酰氨基)二苯甲烷(BMDM)在二苯醚凝 胶中的聚集态及分形结构。研究结果表明，凝胶纤维束是由大量细长的薄带状的单 元纤维有序堆积成的，单元纤维的宽度约为3nm，厚度为0．1—0．2nm；凝胶因子 聚集体则是一种规则的片层结构，具有自相似性和分形特征。利用分形理论中的 Sandbox法计算结果也表明分子凝胶具有分形特征，计算得分形维数D＝1．853。
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| 关 键 词： | 凝胶 原子力显微镜 聚集体 X射线衍射分析 二苯基甲烷 P 分形维数 |
| 修稿时间： | 2002年6月27日 |
The Aggregating State and Fractal Structure of Polymerizable Gelators in Molecular Gels |
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| LI,Jian WANG,Li ZHANG,Xue-Qin YANG,Ya-Jiang.The Aggregating State and Fractal Structure of Polymerizable Gelators in Molecular Gels[J].Acta Chimica Sinica,2003,61(2):171-174. |
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| Authors: | LI Jian WANG Li ZHANG Xue-Qin YANG Ya-Jiang |
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| Institution: | Department of Chemistry,Huazhong University of Science & Technology |
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| Abstract: | The aggregating state and fractal structure of the polymerizable gelator, 4,4'-bis(a-methylacryloyloxy-l ,3- ethyleneoxycarbonylpropionamido) diphenyl methane (BMDM) , in diphenyl ether was investigated with X-ray powder diffraction (XRD) and atomic force microscopy (AFM) . It is revealed that the fibril bundles consist of well-ordered stacks of ribbons or sheets. The width of a ribbon is 3 nm and its thickness is 0.1-0.2 nm. It is also shown that the aggregates of gelators have a well-ordered lamellar structure, self-comparability and typical fractal characteristic. With the help of fractal theory and C++ program, fractal dimension D of the fractal structure can be calculated to be D = 1.8-1.9 through Sandbox methods. |
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| Keywords: | molecular gel gelator atomic force microscopy self-assembly fractal |
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