Photocatalysts can generate radical species from substrates following light excitation. Here the authors report a two-photon bimodal catalysis approach in which the light-activated photocatalyst generates reactive intermediates at opposite redox scales, expanding the accessible redox window.

C-Glycosyl bicyclo[1.1.1]pentanes (BCPs) are saturated analogues of aryl C-glycosides; however, the available methods for their preparation remain limited in scope and generality. Herein, we develop a...

Recently, TADF (thermally activated delayed fluorescence) compounds have expanded their role beyond materials chemistry, enriching the field of photocatalysis and offering a cost-effective and environ...

Photochemically generated phosphoryl radicals from iminyl phosphines enable strain-release addition to azabicyclobutanes, providing access to elusive N-phosphoryl azetidines. Combined experimental, c....

The activation of amines into thiocarbamoyl fluorides provides access to valuable nitrogen-based functionalities. Here, the authors report a mild, photochemical method for in-situ generation of thioca...

Functional polymeric materials have recently emerged as promising supports for organic photocatalysts (PCs), yet the effects of PC design and polymer architecture on catalytic performance remain underexplored. In this study, we present a versatile strategy for small-molecule activation using carbazolyl-dicyanobenzene-based PCs featuring an isophthalonitrile (IPN) core. These PCs feature thermally activated delayed fluorescence (TADF) properties and long-lived excited states, although they also suffer from an intrinsic chemical fragility that hampers their recyclability. A library of IPN derivatives was synthesized, characterized, and integrated into either soluble copolymers (by exploiting controlled radical polymerization) or grafted from inert silica nanoparticles (NPs) to yield PC-loaded spherical polymer brushes. Although soluble copolymers showed catalytic activity comparable to that of free PCs while testing model Povarov-type cycloadditions, PC recovery was only modest and relied on precipitation steps. In contrast, PC-loaded brushes on NPs achieved high yields and enabled efficient catalyst recovery and reuse (≥90%) over multiple cycles. This comparative approach highlights how the nature of the polymeric support, soluble vs. nanostructured, critically influences both catalytic performance and recyclability. More generally, the incorporation of IPN PCs into advanced polymer scaffolds is demonstrated to enhance their applicability, cost-efficiency, and sustainability.

The activation of amines into thiocarbamoyl fluorides (TCarbFs) provides access to valuable nitrogen-based functionalities. However, their broader use has been hindered by the reliance on harsh reagen...

Herein, we report a metal-free divergent visible-light driven method for the synthesis of fluorinated sulfoximines. Both olefins and propellanes efficiently undergo difluorosulfoximination with yields...