Dive into the research topics of '2,5-bis(2-octyldodecyl)pyrrolo[3,4-c]pyrrole-1,4-(2H,5H)-dione-based donor-acceptor alternating copolymer bearing 5,5′-Di(thiophen-2-yl)-2, 2′-biselenophene exhibiting 1.5 cm2·V -1·s-1 hole mobility in thin-film transistors'. Together they form a unique fingerprint.