Unveiling the Synthetic Potential of Conjugated Organic Molecule as Efficient Photo-catalytic Trifluoromethylation and Photo-cocatalytic C–N Coupling Reaction

Known for its exceptional light-absorbing properties, conjugated organic molecule are capable of efficiently converting solar energy into chemical energy, providing a new avenue for the utilization of renewable energy. In this work, we successfully synthesized and designed a conjugated organic molecule with 4,7-di(9 H -carbazol-9-yl)benzo[ c ][1,2,5]thiadiazole ( B2Cz ). In trifluoromethylation reactions, B2Cz exhibits unique activity by activating C–H bonds to selectively introduce trifluoromethyl groups. Furthermore, B2Cz acts as a photo-cocatalyst alongside NiBr 2 in C–N coupling reactions, which demonstrated excellent synergistic catalytic effects. This catalytic system not only enhances reaction efficiency but also significantly advances environmental friendliness and sustainability. Graphical Abstract