Redox behavior of polyaniline - Transition metal complexes in solution

Macromolecules

Volumn 29, Issue 25, 1996, Pages 8277-8279

  Higuchi, Masayoshi ^a   Imoda, Daisuke ^a   Hirao, Toshikazu ^a  

^a OSAKA UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

COMPLEXATION; CONDUCTIVE MATERIALS; CYCLIC VOLTAMMETRY; REDOX REACTIONS; SOLUTIONS; TRANSITION METAL COMPOUNDS;

POLYANILINE; REVERSIBLE REDOX SYSTEM;

ORGANIC POLYMERS;

EID: 0030566487     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma960761f     Document Type: Article

References (15)

1. (a) Kitani, A.; Kaya, M.; Sasaki, K. J. Electrochem. Soc. 1986, 133, 1069.
2. (b) MacDiarmid, A. G.; Yang, L. S.; Huang, W. S.; Humphrey, B. D. Synth. Met. 1987, 18, 393.
3. (c) Gustafsson, G.; Cao, Y.; Treacy, G. M.; Klavetter, F.; Colaneri, N.; Heeger, A. J. Nature 1992, 357, 477.
4. (d) DeBerry, D. W. J. Electrochem. Soc. 1985, 132, 1022.
5. (a) Masters, J. G.; Sun, Y.; MacDiarmid, A. G. Synth. Met. 1991, 41, 715.
6. (b) Chance, R. R.; Boudreaux, D. S. Synth. Met. 1987, 18, 329.
7. (c) Moon, D.-K.; Maruyama, T.; Osakada, K.; Yamamoto, T. Chem. Lett. 1991, 1633.
8. Ray, A.; Asturias, G. E.; Kershner, D. L.; Richter, A. F.; MacDiarmid, A. G. Synth. Met. 1989, 29, E141.
9. Hirao, T.; Higuchi, M.; Ikeda, I.; Ohshiro, Y. J. Chem. Soc., Chem. Commun. 1993, 194.
10. Hirao, T.; Higuchi, M.; Ohshiro, Y.; Ikeda, I. Chem. Lett. 1993, 1889.
11. Hirao, T.; Higuchi, M.; Hatano, B.; Ikeda, I. Tetrahedron Lett. 1995, 36, 5925.
12. Polyaniline was prepared according to the reported method: MacDiarmid, A. G.; Chiang, J. C.; Richter, A. F.; Somasiri, N. L. D. In Conducting Polymers; Alcacer, L., Ed.; Reidel Publishing: Dordrecht, The Netherlands, 1987; p 105. A solution of aniline (20.4 g, 219 mmol) in 1 M HCl (300 mL) was placed in an ice/water bath and cooled. A solution of ammonium peroxodisulfate (11.5 g, 50.4 mmol) in 1 M HCl (200 mL) cooled in an ice/water bath was dropwise added to the solution of aniline over about 10 min with vigorous stirring. As the polymerization proceeded, the solution turned dark green and the salt of polyaniline began to precipitate. After the addition of the ammonium peroxodisulfate solution was completed, the mixture was stirred for an additional 2 h. Polyaniline (4.5 g) was filtered using a Büchner funnel, washed with 1 M HCl (300 mL), acetonitrile (300 mL), and then ether (300 mL), and dried in vacuum at room temperature for 24 h. Treatment of the thus obtained polymer with an aqueous solution of 0.1 M sodium hydroxide for 24 h with stirring gave the undoped polyaniline, which was filtered, washed with water (300 mL), acetonitrile (300 mL), and then ether (300 mL), and dried in vacuum at room temperature for 24 h.
13. Venugopal, G.; Quan, X.; Johnson, G. E.; Houlihan, F. M.; Chin, E.; Nalamasu, O. Chem. Mater. 1995, 7, 271.
14. 2 as a drying agent and stored under argon. Copper(I) chloride (Wako Pure Chemical Industries) was used after drying under reduced pressure at 80 °C for 24 h.
15. The redox interaction in the coordination sphere is assumed to reduce the quinoid moiety of the undoped polyaniline.