Electrochemical properties of the self-assembled films based on polyanilines and carboxylated polyanilines

POLY 185

Miaomiao Xiao, xiaomiaomiao@bit.edu.cn1, Junge Zhi, zhijunge@bit.edu.cn2, Bin Tong, tongbin@bit.edu.cn1, Wei Zhao, zwqust@126.com3, Jianbing Shi, shijb@bit.edu.cn3, Yuexiu Pan, pyxiu@163.com3, and Yuping Dong, chdongyp@bit.edu.cn1. (1) College of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China, (2) College of Science, Beijing Institute of Technology, Beijing, 100081, China, (3) College of Materials Science & Engineering, Beijing Institute of Technology, Beijng, 100081, China
In this study, Layer-by-layer films of PAN/PCAN or PAN/CPAN were fabricated from two conducting polymers, partially doped polyaniline as a polycation and full- or partially carboxylated polyanilines as a polyanion. The films based on the electrostatic attraction between opposite charge polyelectrolytes are uniform. When The PAN/PCAN film in 1 mol/L alkali solution, the layer-to-layer becomes more compact at beginning 5hr and then the alkali anions diffuse slowly into the interior of films to destroy the stability after 24 hrs. So the self-assembled film has a good stability for a longer time. The CV experimental results show that the electrochemical properties of the LBL films not only increase with the number of bilayer, but also have a correlation with the contents of carboxylic groups in copolymers. The conductivity of the films increases when the content of aniline in copolymer increases.
 

General Papers: Functional Materials
6:00 PM-8:00 PM, Sunday, August 19, 2007 BCEC -- Exhibit Hall - B2, Poster

Division of Polymer Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007