Photochemical reaction between magnesium tetraphenyl porphyrin and oxygen

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The photochemical reaction of magnesium tetraphenyl porphyrin(MgTPP) with O2 was studied in CH2Cl2 by steady-state fluorescence,UV-vis absorption,FTlR and MALDI-TOF MS measurements.These spectra indicate that O2 can react with Mg TPP excited by irradiation.forming the stablel:1 coordinated adduct of MgTPP-O2.In the adduct,the oxygen atoms of O2 may insert in the Mg-N bonds in MgTPP and birid with the nitrogen atoms of MgTPP to form N-O-Mg bonds.
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