Magnetic Circularly Polarized Luminescence from PtIIOEP and F2‐ppyPtII(acac) under North‐up and South‐up Faraday Geometries

The magnetic circularly polarized luminescence (MCPL) and photoluminescence (PL) spectra of achiral (2,3,7,8,12,13,17,18‐octaethylporphyrinato)platinum(II), PtOEP, and [2‐(4′,6′‐difluorophenyl)pyridinato‐N,C2′]platinum(II) acetylacetonate‐O,O, F2‐ppyPt(acac), in toluene and dichloromethane solutions were recorded under an external magnetic field of 1.6 T with N‐up and S‐up Faraday geometries. The MCPL signs of PtOEP and F2‐ppyPt(acac) were controlled solely by changing the N‐up and S‐up geometries. The MCPL/PL wavelengths of F2‐ppyPt(acac) in solutions were varied by the ratio of the monomeric and excimeric species. An achiral platinum‐based complex, F2‐ppyPt(acac), exhibits nearly mirror‐symmetric magnetic circularly polarized luminescence (MCPL) spectra under an external magnetic field of 1.6 T. The MCPL characteristics were tuned solely by changing N‐up and S‐up Faraday geometries and concentrations of the Pt complex.