Fig. 2

Control of dodecanethiol substitution onto the backbone. a Structure of substituted polymer P2-F. b Normalised UV–Vis absorption spectra of each polymer, in chlorobenzene solution. c Stacked 1H NMR spectra with increasing mol% of thiol, aromatic peaks integrated to 7H for each spectra. Integration value for HA (x) listed in table for each mol% of thiol reacted