Luminescence properties of fluorene-substituted porphyrinates of magnesium(II) and aluminum(III)

Abstract

Aluminum(III) (AlClTFP) and magnesium(II) (MgTFP) porphyrinates were synthesized from free meso-tetra(fluoren-2-yl)porphyrin, aluminum chloride and the MgBr2Et2O complex. The structure of the synthesized compounds was established on the basis NMR and absorption spectroscopy data. The luminescence properties of the new compounds were studied in a toluene solution at 300 K, and the quantum yields of fluorescence were determined by relative method. The quantum yields of fluorescence of MgTFP and AlClTFP (37 and 35%, respectively) are higher than that of parent porphyrin (22%).