Table 1. Properties of p(gNDI-T2) and p(gNDI-gT2).

Polymer	IP* [eV]	EA* [eV]	Bandgap ΔE=IP−EA	Absorption onset [nm]	Repeating units [NMR]
p(gNDI-T2)	5.53	3.85	1.68	817	—†
p(gNDI-gT2)	4.83	4.12	0.71	1,550	7‡

Ionization potential (IP), electron affinity (EA) and bandgap measured by cyclic voltammetry (CV) of a thin film in 0.1 M TBAPF₆ (ACN) acetonitrile solution.

^*CV measurements of the films with the onset energy value for oxidation and reduction peak.

^†End capping for p(gNDI-T2) could not be carried out due to a low solubility of the polymer.

^‡The number of repeating units was calculated by ¹H NMR spectroscopy as well as MALDI-TOF spectrometry.