fig9
![Unraveling the main chain effects of fused thiophene conjugated polymers in electrochromism](https://image.oaes.cc/b3ae5c60-3d68-4623-a906-5b19a85a5869/4408.fig.9.jpg)
Figure 9. SEM images of PT (A), PTT (B) and PDTT (C) polymerized electrochemically on ITO-coated glass. SEM: Scanning electron microscopy; PT: polythiophene; PTT: poly(thieno[3,2-b]thiophene); PDTT: poly(dithieno[3,2-b:2’,3’-d]thiophene); ITO: indium tin oxide.