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化学学报
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化学学报 ›› 2001, Vol. 59 ›› Issue (11): 1894-1897. 上一篇    下一篇

研究论文

七氟丁酸酐有序超薄膜的制备与结构

任嗣利;杨生荣;王金清;齐尚奎;赵亚溥   

  1. 中国科学院兰州化学物理研究所.兰州(730000);中国科学院固体润滑国家重点 实验室;中国科学院力学研究所.北京(100080);中国科学院非线性力学国家重点 实验室
  • 发布日期:2001-11-15

Preparation and structure of HFBA monolayer on PEI-coated single crystal silicon substrate

Ren Sili;Yang Shengrong;Wang Jinqing;Qi Shangkui;Zhao Yapu   

  1. Lanzhou Inst Chem Phys, CAS.Lanzhou(730000);Inst Mech, Chinese Acad Sci.Beijing(100080)
  • Published:2001-11-15

PDF

555

被引次数

7

在涂敷有聚合物PEI涂层的单晶硅表面上制备了HFBA单层分子膜，接触解测量及XPS结果表明，PFBA在PEI表面产生了化学吸附发生了化学键合(酰胺键)，形成了低表面能的HFBA单分子层膜，这一吸附反应的动力学行为可能表现为Langmuir单分子层化学吸附。

关键词: 七氟丁酸酐, 聚乙烯亚胺, 自组装, 单分子膜, Ｘ射线光电子谱法, 吸附, 反应动力学

Heptafluorobutyric ahhydride (HFBA) monolayer was prepared on polyethyleneimine (PEI) coated single crystal silicon substrate. It could be a promising candiated as lubricant for MEMs and micro- machines. The ultra-thin film was characterized by means of contact- angle measurement and X-ray photoelectron spectroscopy (XPS). The great variations of contant angles on the modified substrate indicated that an ordered monolayer of HFAB was obtained. The XPS results showed that the HFBA monolayer on PEI coating came into being in the presence of a covalent amide bond between the carboxylic groups and the amine groups. Furthermore, the adsorption of HFBA onto PEI surface could be described with Langmuir chemical monolayer adsorption.

Key words: POLYETHYLENEIMINE, MONOMOLECULAR FILMS, X-RAY PHOTOELECTRON SPECTROMETRY, ADSORPTION, REACTION KINETICS

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