The synthesis and spectroscopic investigation of vinylated meso-tetraphenylporphyrin

A series of new vinylated 5,10,15,20-tetraphenylporphyrins have been synthesized and characterized by 1H NMR, MS, UV–vis and fluorescence studies. Following selective excitation of the porphyrin compounds with UV light, the energy is transferred to the porphyrin core and reemitted as red light. In comparison to tetraphenylporphyrin (TPP), the luminescence properties are markedly improved.