Luminescent Fe(III) Complex Sensitizes Aerobic Photon Upconversion and Initiates Photocatalytic Radical Polymerization
Pengyue Jin, Xinhuan Xu, Yongli Yan, Heinrich Hammecke, Cui Wang
Abstract
with 9,10-diphenylanthracene (DPA) as the annihilator achieves a 6-fold enhancement to ∼0.2% in aerated solution at room temperature. The singlet excited state of DPA, accessed via photon upconversion in the Fe(III)/DPA pair, allows efficient photoredox catalytic radical polymerization of acrylate monomers in a spatially controlled manner, whereas this process is kinetically hindered with the prompt DPA. Our study provides a new strategy of using low-cost iron and low-energy visible light for efficient polymer synthesis, which is a significant step for both fundamental research and future applications.
Topics & Concepts
ChemistryPhotochemistryPhoton upconversionIridiumExcited stateRutheniumPhotosensitizerAnthraceneIntersystem crossingTriplet statePhotocatalysisEnergy transformationCatalysisMoleculeSinglet stateOrganic chemistryPhysicsThermodynamicsNuclear physicsIonLuminescence and Fluorescent MaterialsNanoplatforms for cancer theranosticsRadical Photochemical Reactions