Hello everyone, hope you are doing great.
I did drop cast PVC layer consist of: PVC/plasticizer (Dioctyl sebacate (DOS)), Spiropyran and cyclohexanone(as a solvent) on the top of polyaniline in-situ polymerized on the gold surface.
I got the following results for the cross section SEM.
I am wondering what is the the region which indicated with red color in the pictures.
I really appreciate your help.