Ukrainian Journal of Physical Optics 

Number  3, Volume 6,  2005

Home page

Other articles 
in this issue

Doping-Induced Absorption in Polyphenylacetylene Films
1Aksimentyeva O.I., 1Konopelnyk O.I., 2Stakhira P.Y., 3Tsizh B.R.

1Ivan Franko Lviv National University, 8 Kyrylo and Mefodiy St., 79005 Lviv, Ukraine
2National University “Lviv Polytechnic”, St Yuriy Sq., 79016 Lviv, Ukraine
3Bydgoszcz Academy of Kazimer Wielki Chodkiewicza 85-064, Poland

download full version

The processes of donor and acceptor doping of polyphenylacetylene (PPA) films electrochemically obtained on transparent electrodes have been studied. It has been shown that donor n-doping of the PPA by lithium leads to formation of free charge carriers in the conjugated polymer chain, which cause a doping-induced absorption in the long-wave region. Under acceptor p-doping of the PPA films by iodine, the doping-induced optical absorption is observed in the short-wave region. It results from the complexes of charge transfer between the PPA and iodine.

Key words: polyphenylacetylene, electrochemical preparation, optical spectra, donor and acceptor doping, absorption bands.

PACS: 61.43 Dq, 68.60.Dv, 71.20.Rv

doi 10.3116/16091833/6/3/114/2005

1. Simon J, and Andre J-J, 1985. Molecular semiconductors. Springer.
2. Yang M, Xu J, and Hu QJ, 1995. J. Photochem. Photobiol. A: Chem. 85: 147.
3. Ehrlich P, and Anderson W, 1991. Handbook of conducting polymers (New York) 1: 441.
4. Cametti C, Codastefano P, Amato RD et al, 2000. Synth. Met. 174: 173.
5. Stakhira PY, Aksimentyeva OI, Dorosh OB, Savchyn VP, Cherpak VV, and Konopelnyk OI, 2004. Ukr. J. Phys. 49: 1193.
6. Kang EN, Bhatt AF, Villaroel E, Anderson WA, and Ehrlich P, 1982. Mol. Cryst. Liq. Cryst. 83: 307.
7. Tang BZ, Poon WH, and Leung SM, 1997. Macromolecules 30: 2209.
8. Aksimentyeva OI, Lupsak N-O, and Kovalskiy YaP, 2001. Ukr. J. Chem. 67: 91.
9. Aksimentyeva O, Lupsak N, Konopelnik O, and Grytsiv M, 2002. Mol. Cryst. Liq. Cryst. 385: 79.
10. Heeger AJ, 2002. Synth. Metals. 123: 23.
11. Sverdlova OV, 1985. Electron spectra in organic chemistry. Khimia.
12. Pelous Y, Froyer G, Herold C, and Lefrant S, 1989. Synth. Metals 29: E17.

Home | Instructions to Authors | Editorial Board | Meetings & Exhibitions