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Investigation of molecular chains structure of polyimide Langmuir–Blodgett films by atomic force microscopy

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5 Author(s)
Yang, Xiao‐Min ; National Laboratory of Molecular & Biomolecular Electronics, Southeast University, Nanjing, 210018, People’s Republic of China ; Min, Guang‐Wei ; Ning Gu ; Zu-Hong Lu
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Atomic force microscopy was applied to investigate the microscopic molecular structures of polyimide Langmuir–Blodgett (LB) films. The polyimide chains of a monolayer film on graphite were observed. It was found that the polyimide LB film with a groovy surface occurs due to the orientation of polyimide chains. By horizontal deposition the polyimide chains show a zigzag structure, while by vertical deposition the polyimide chains show a straight‐line structure. Moreover, the polyimide chains are always oriented along the direction of deposition. It is suggested that the polyimide chains are oriented by the LB technique.

Published in:

Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures  (Volume:12 ,  Issue: 3 )

Date of Publication:

May 1994

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