Recently, significant progress in the dehalogenation of aryl bromides and chlorides containing EDGs (Ered < -2.50 V vs SCE) has been achieved. Notably, Nicewicz and coworkers used an acridinium salt 3,6-di-tert-butyl-9-mesityl-10-phenylacridin-10-ium tetrafluoroborate, hereby named [ t Bu-Mes-Acr]BF4 (Figure ) to achieve yields of 58-99% over a wide scope of aryl bromides and chlorides containing EDGs; however, a high 10 mol% PC loading was required (Figure ). Cyanoarene based PCs, including 1,2,3,5tetrakis(carbazol-9-yl)-4,6-dicyanobenzene, 4CzIPN, and related derivatives (Figure ), have been used in dehalogenation reactions, involving aryl bromides and chlorides with EDGs in yields ranging from 38-74% for direct dehalogenation and 20-90% in coupling reactions. Significant photon flux in the form of two or four LEDs (2 × 40 W or 4 × 3 W ), and a PC loading of 5 mol% were used to attain these yields (Figure ). 3 Figure . a) A selection of organic PCs used in the literature for photoinduced dehalogenation of aryl halides and b) a summary of the most difficult substrates that can be reduced using these PCs and for the PC used in this work, as well as the conditions for that specific substrate.