Summary of molecular weights and optoelectronic properties of polymers 1–5^a.

	M n	M w	PDI	E ox/onset (V)	E red/onset (V)	HOMO (eV)	LUMO (eV)	E-chem (eV)	Optical gap (eV)
1	15 800	56 400	3.6	0.38	−1.80	−5.18	−3.00	2.18	1.62
2	8600	29 400	3.4	0.34	−1.80	−5.14	−3.00	2.14	1.84
3	4200	6900	1.7	0.65	−2.09	−5.45	−2.71	2.74	2.13
4	4000	7700	1.9	0.63	−1.98	−5.43	−2.82	2.61	2.15
5	2800	3900	1.3	0.46	−1.99	−5.26	−2.81	2.45	2.22

^aPotentials are measured relative to a ferrocenium/ferrocene redox couple used as an internal standard (Fig. 3). E_ox/onset is the oxidation onset potential and E_red/onset is the reduction potential onset. The redox potential onsets were used to calculate HOMO and LUMO via ferrocene standard in vacuum (4.8 eV). The M_n, M_w and polydispersity PDI values were measured with GPC with THF as eluent and polystyrene standard.