In most of the papers, there are reports on CV carried out on thin films of organic semiconductors especially small molecules (ITO as working electrode). I have been unsuccessful in all my attempts because all the compounds dissolve from the substrate when solvent(acetonitrile/DCM/DMF) with electrolyte was used. Can anyone suggest me an orthogonal solvent to carry out analysis for thin-films without the dissolution of the compound? Or any other alternative method I could make use?
Few things to be taken care of
1. whether the film is attached properly on ITO?
2. Is it possible to coat on other substrate like Au, instead of ITO?
3. what is the potential range you are using?
4. your molecule is stable enough on organic solvents?
5. Have you pretrated your substrate, here ITO?
6. Is your solvents are anhydrous?
Hope it will help to overcome your difficulties.
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