Tuning Structural and Electronic Communication through Metal Coordination in Axially Bonded 3-Pyrrolyl BODIPY–Metalloporphyrin Conjugates

≈ -0.16 eV). Triads show complementary EPR evidence under dark conditions consistent with a charge-separated intermediate, supporting photoinduced electron transfer. Electrochemical studies show distinct redox processes for the dyads, whereas the triads display broadened reduction features indicative of enhanced electron and charge delocalization. DFT calculations show a systematic decrease in the HOMO-LUMO gap from 2.34 to 1.14 eV. These results establish clear structure property relationships governing energy and electron transfer processes in axially coordinated 3-pyrrolyl BODIPY-metalloporphyrin assemblies.