Fabrication and Electrochemical Behaviors of Thin Films of Polyaniline by Langmuir-Blodgett Technique and Electropolymerization

Authors

Benzeng Hua, Department of Chemistry of Xiamen University, State Key Laboratory for Physical Chemistry of the Solid Surface, Xiamen 361005
Zhaoxiong Xie, Department of Chemistry of Xiamen University, State Key Laboratory for Physical Chemistry of the Solid Surface, Xiamen 361005
Yanzhen Chen, Department of Chemistry of Xiamen University, State Key Laboratory for Physical Chemistry of the Solid Surface, Xiamen 361005
Yunhong Zhang, University of Science and Technology Beijing, Beijing 100081

Corresponding Author

Yanzhen Chen

Abstract

Hydrogen-bond between stearic acid and aniline in subphase lead to Langmuir monotayers of stearic acid-aniline, the molecular area of stearic acid-aniline is 26 nm². With surfacepressure increased into 50 mN/M, the hydrogen-bond would be rearranged, aniline molecular transales into vertical from horizontal, surface pressure decreased quickly. A new kind of Langmuirmonolayer is formed instead of collapse, it's molecular area decreases into 24 nm² and thicknessin creases with 0.25 nm. After electroreduction of L-B films depeited onto the surface of SnO₂ electrode, anilne layers between two stear acid matix could be polymerized into thin films of polyanilne. The structure of thin films has ben studied by small angle X-ray scattering. The electrochemical properties of such thin films are very different from the films of polyaniline preparedby others methods. It's properties is not only effected by the proceed of ion transport, also by the hydrophilic grounp (-COO^-) of stearic acid.

Keywords

Aniline polyaniline, Langmuir-Blogeet films, Electropolyerization

DOI Link

https://doi.org/10.61558/2993-074X.1316

Publication Date

1995-11-28

Online Available Date

1995-11-28

Revised Date

1995-08-03

Received Date

1995-06-03

Recommended Citation

Benzeng Hua, Zhaoxiong Xie, Yanzhen Chen, Yunhong Zhang. Fabrication and Electrochemical Behaviors of Thin Films of Polyaniline by Langmuir-Blodgett Technique and Electropolymerization[J]. Journal of Electrochemistry, 1995 , 1(4): 432-438.
DOI: 10.61558/2993-074X.1316
Available at: https://jelectrochem.xmu.edu.cn/journal/vol1/iss4/9