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首页> 外文会议>Symposium on Magnetic Ultrathin Films,Multilayers and Surface --1997 March 31-April 4,1997, San Francisco, California, U.S.A >Molecular self-assembly of Fe_3O_4/polyimide nanocomposite films (I)
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Molecular self-assembly of Fe_3O_4/polyimide nanocomposite films (I)

机译：Fe_3O_4 /聚酰亚胺纳米复合薄膜的分子自组装（I）

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摘要

Layer-by-layer molecular self-assembly of nanosized magnetite (Fe_3O_4) particles and polyimide precursor molecules into multilayer ultrathin films has been accomplished on single crystal silicon and quartz substrates. This process involves the alternate dipping of a substrate into an aqueous solution of cationic polymer which coats on nanoscale Fe_3O_4 particles as a stabilizer followed by dipping into an aqueous solution of anionic polyimide precursor (polyamic acid salt, PAATEA). The growth process and the structure have been characterized using UV-vis spectroscopy, FT-IR, and scanning electron microscopy. The results demonstrate that well- ordered uniform monolayer and multilayer magnetic films have been formed on silicon and silica surfaces.
机译：纳米磁铁矿（Fe_3O_4）颗粒和聚酰亚胺前体分子层状分子自组装成多层超薄膜已经在单晶硅和石英基板上完成。该方法包括将基材交替地浸入阳离子聚合物的水溶液中，该水溶液涂覆在作为稳定剂的纳米级Fe_3O_4颗粒上，然后浸入阴离子聚酰亚胺前体（聚酰胺酸盐，PAATEA）的水溶液中。生长过程和结构已经使用紫外可见光谱，FT-IR和扫描电子显微镜进行了表征。结果表明，在硅和二氧化硅表面上已经形成了有序的均匀单层和多层磁性膜。

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