Polyaniline mixed LB films exposed to X-rays
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Data
1999-05-01
Autores
Malmonge, J. A.
Dhanabalan, A.
Riul, A.
Faria, R. M.
Oliveira, O. N.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
X-ray irradiation is shown to affect electronic properties of polyaniline (PANi) in composite Langmuir-Blodgett (LB) films of PANi and cadmium stearate, in a similar way to acid doping. The time it takes for the shift in the UV-vis spectra, characteristic of PANi doping, increases linearly with the film thickness, thus indicating a surface-controlled process. The humidity of the environment under which the films are irradiated is also of extreme importance. No shin is observed under vacuum or under dry atmospheres of N-2, O-2 and Ar. For humid environments the time for the shift decreases with increasing relative humidity.
Descrição
Palavras-chave
Langmuir-Blodgett technique, UV-Vis spectroscopy, polyaniline
Como citar
Synthetic Metals. Lausanne: Elsevier B.V. Sa, v. 101, n. 1-3, p. 801-802, 1999.