Low bandgap poly(fluorinated metallophthalocyanine-alt-diketopyrrolopyrrole)s with outstanding thermal stability

- We prepare poly (fluorinated metallophthalocyanine-alt-diketopyrrolopyrrole)s.
- Two polymers were prepared via a Suzuki-Miyaura cross-coupling reaction.
- Polymer properties were characterized by various analytical techniques.
- The polymers exhibit a low bandgap of 1.7 eV.

This paper reports on a novel synthesis of conjugated alternating polymers composed of a phthalocyanine (Pc) and a diketopyrrolopyrrole (DPP) by combining ABAB-type diiodo-substituted Pc and DPP-boronic acids via a Suzuki-Miyaura cross-coupling reaction. The resulting Pc-DPP alternating polymers exhibit a low bandgap of around 1.7 eV and the high level thermal stability. Owing to the potential intriguing properties of these compounds, they can find promising applications in electronic and optoeletronic devices.