Dear Saima,

Polypyrrol is insoluble in solvents but swellable. You can also verify the following link.

https://www.researchgate.net/post/Which_solvent_should_we_use_to_solubilise_the_polypyrrole2#:~:text=The%20solubility%20of%20polypyrrole%20(PPy,when%20exposed%20to%20some%20solvents.

Dear Saima,

thank you for posting this interesting technical question on RG. Mina already provided a valuable hint and RG link. It is well-established that both undoped and doped polyprrole films are normally insoluble in all organic solvents but swellable. However, your question probably refers to the following relevant article:

Solvent effects on the characteristics of soluble polypyrrole

Article Solvent effects on the characteristics of soluble polypyrrole

In this paper the authors mention that sonication with ultrasound is required to dissolve the polypyrrole in certain highly polar organic solvents. Unfortunately the article has not yet been posted as public full text on RG. However, four of the six authors have RG profiles. Thus it should be no problem to request the full text directly from one of the authors via RG.

I hope this helps. Good luck with your work and best wishes, Frank Edelmann

Ppy is not soluble in weakly polar solvents, in order to dissolve ppy in chloroform you need to add dodecylbenzene sulfonic acid (DBSA) under ultrasonication. Hope this ll solve the problem and please have a look at the article mentioned by Frank Edelmann