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 亚乙氧基羰基丙酰氨基 )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 85
The aggregating state and fractal structure of the polymerizable gelator, 4, 4'-bis(alpha-methylacryloyloxy-1, 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 similar to 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 similar to 1.9 through Sandbox methods.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2003年第2期171-174,共4页
Acta Chimica Sinica
基金
国家自然科学基金 (No.2 99740 1 2 )资助项目
