Diphenyliodonium hexafluorophosphate (CAS 58109-40-3)

Diphenyliodonium hexafluorophosphate (DPIHP) is a versatile chemical compound widely used as a photoinitiator in polymerization reactions, particularly in the field of photopolymerization. Its mechanism of action involves the generation of highly reactive phenyl radicals upon exposure to light, which initiate polymerization processes by abstracting hydrogen atoms from monomers or coinitiators. DPIHP′s efficiency as a photoinitiator stems from its ability to undergo rapid and selective photolysis, releasing active iodine species that propagate polymer chain growth. This property makes DPIHP particularly suitable for photopolymerization reactions requiring high spatial and temporal control, such as microfabrication, lithography, and three-dimensional printing. Moreover, DPIHP has found application in the synthesis of various advanced materials, including photoresponsive coatings, adhesives, and functionalized nanoparticles. In recent years, researchers have also explored DPIHP′s potential in photodynamic therapy (PDT), a promising approach for cancer treatment that involves the selective activation of photosensitizing agents to induce localized cell death upon light exposure. By incorporating DPIHP into photosensitizer formulations, scientists aim to enhance PDT efficacy through improved spatiotemporal control of photoactivation processes. Overall, DPIHP′s unique photochemical properties and broad applicability make it a valuable tool for advancing research in fields ranging from materials science to biomedical engineering, driving innovations in diverse technological and biomedical applications.