Doped polyaniline film can be dedoped upon exposure to gases like ammonia. Please how can I prevent this dedoping from oxidizing or reducing gases @ Prof Bernhard Wessling and others please?
As requested by Prof Bernhard, I want to exploit the optical and electrical properties of the thin film of doped polyaniline. However, reducing gases like ammonia, methane, H2S either from environment or other possible sources can dedope it. By dedoping, its optical and electrical properties must be altered. So please I am asking of any possible way to prevent such interaction between the doped polyaniline's surface and any gas (reducing or oxidizing).
Fahad, these gases are not "reducing" but may decrease PAni's conductivity, correct. But in normal environment, theses gases are negligible traces. There is much more water vapor around which increases the conductivity (extremely dry PAni has a lower conductivity than PAni whih you let stay around in ambient atmosphere, then PAni will easily adsorb water).
The effect of ammonia *gas* is not really "dedoping"; you can only achieve real dedoping if you would take NH4OH and repeatedly wash PAni.
Unless you have special condictions with lots of NH3 gas around, I suggest you don't worry.
Dear Prof Bernhard
Is it possible to dedope Pani just with water?
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