Development of heterogeneous photocatalysts via the covalent grafting of metal complexes on various solid supports

To date, remarkable progress has been achieved in the development of photocatalysts owing to their high activity, selectivity, and tunable light absorption in the visible light range. Recently, heterogeneous photocatalytic systems have emerged as potential candidates due to their beneficial attributes (e.g., high surface area, ease of functionalization and facile separation). Herein, we provide a concise overview of the rational design of heterogeneous photocatalysts by grafting photoactive complexes on heterogeneous support matrices via covalent grafting and their detailed characterization techniques, which have been followed by the landmark examples of their applications. Also, major challenges and opportunities in the forthcoming progress of these appealing areas are emphasised.

Cercosporin-photocatalyzed sp3 (C-H) activation for the synthesis of pyrrolo[3,4-c]quinolones

We reported a new method that visible light along with cercosporin, one of the naturally occurring perylenequinonoid pigments with excellent properties of photosensitization, photocatalyzed sp³ (C-H) activation for the synthesis of pyrrolo[3,4-c]quinolones through the annulation of anilines and maleimides under mild conditions.

Vilsmeier–Haack reagent mediated synthetic transformations with an immobilized iridium complex photoredox catalyst

The synthesis of amides, nitriles, and anhydrides via reactions under the action of the visible-light-driven in situ generated Vilsmeier–Haack reagent from CBr₄ in DMF.