Fig. 2: Patterning Mechanism of Photopatternable PEDOT:PSS.
From: Water-based direct photopatterning of stretchable PEDOT:PSS using amphiphilic block copolymers
a The change of carbon peaks before and after UV exposure. The C=O bonds (red) emerge from the photoactivated process of P123. b Depth profile of carbon XPS peaks that reveal the P123-rich surface and PEDOT:PSS-rich bottom layers inside the composite film. c Proposed chemical mechanism of hydrophilicity control after UV exposure. Chemical reactions initiated by the photoactivated benzophenone and ensuing chain cleavage of P123.
