The potential of pDTCz-DPmS to act as a photocatalyst was subsequently evaluated in a range of prototypical photochemical reactions that cover the suite of commonly encountered mechanisms: reductive quenching, oxidative quenching, energy transfer and dual metallaphotocatalysis with a Ni(II) co-catalyst (Figure ). The performance of pDTCz-DPmS was cross-compared with that of 4CzIPN as well as the reference photocatalysts previously reported for these reactions. CREE XP LEDs as the light source and MeCN as the solvent for 24 h could be replicated using our photocatalytic setup (80% vs 81%, respectively) when matching the conditions as closely as possible, with the use of a 456 nm Kessil lamp being the only significant change. However, these conditions needed to be altered to 390 nm irradiation in DCM due to the absorption profile and solubility of pDTCz-DPmS.