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Metalloporphyrins with paramagnetism are becoming research focus because their potential use in biomedical field as fluorescence probes and the magnetic resonance imaging(MRI)contrast agents.Divalent manganese metal ion(Mn2+)has a halffilled 3d shell with a strong paramagnetic effect.To investigate whether porphyrins coordinated to Mn2+can serve as multiple functional probes,hematoporphyrin monomethyl ether coordinated to Mn2+(Mn-HMME)was synthesized and its characterization,luminescence and photosensitivity were studied.