BODIPY-Based Photoacid Generators for Light-Induced Cationic Polymerization

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Photoacid generators (PAGs) are organic compounds that can generate protons (H + ) upon irradiation with certain wavelengths of light. In this work, we designed and synthesized the first BODIPY-based PAGs with D–A and D−π–A conjugation structures and achieved green and red LED light-induced acid generation. By the use of red-light absorbance, red-LED-triggered cationic polymerization was demonstrated as a proof-of-concept application of these PAGs.