| Numéro |
J. Phys. IV France
Volume 03, Numéro C4, Septembre 1993
4th International Workshop on Positron and Positronium Chemistry
|
|
|---|---|---|
| Page(s) | C4-253 - C4-255 | |
| DOI | https://doi.org/10.1051/jp4:1993438 | |
4th International Workshop on Positron and Positronium Chemistry
J. Phys. IV France 03 (1993) C4-253-C4-255
DOI: 10.1051/jp4:1993438
1 Department of Physics, Wuhan University, Wuhan 430072, P.R. of China
2 Dept. of Chem., Huazhong Univ. of Sci. & Tech., Wuhan 430072, P.R. of China
3 Dept. of Chem., Huazhong Univ. of Sci. [MATH] Tech., Wuhan 430072, P.R. of China
© EDP Sciences 1993
J. Phys. IV France 03 (1993) C4-253-C4-255
DOI: 10.1051/jp4:1993438
Positron annihilation study in polyaniline conducting polymer
Z.L. PENG1, S.Q. LI1, Y.Q. DAI1, B. WANG1, S.J. WANG1, H. LIU2 and H.Q. XIE31 Department of Physics, Wuhan University, Wuhan 430072, P.R. of China
2 Dept. of Chem., Huazhong Univ. of Sci. & Tech., Wuhan 430072, P.R. of China
3 Dept. of Chem., Huazhong Univ. of Sci. [MATH] Tech., Wuhan 430072, P.R. of China
Abstract
The positron lifetime spectra in polyaniline have been measured as a function of protonation level (pH from 7 to -0.8). We observed that (1) the short lifetime τ1 decreased with the protonation level ; (2) the intermediate lifetime was constant (τ2 ≈ 360 ps), whereas its intensity I2 increased with increasing protonation level which was related to the conductivity of material. These results are discussed in terms of conducting island model.
© EDP Sciences 1993