Chemically reversible binding of H2S to a zinc porphyrin complex: towards implementation of a reversible sensor via a
Maria Strianese1, Marina Lamberti2, Claudio Pellecchia1
1Dipartimento di Chimica e Biologia "Adolfo Zambelli", Università degli Studi di Salerno Via Giovanni Paolo II, 132 84084 Fisciano (SA), Italy. mstriane@unisa.it cpellecchia@unisa.it.
Abstract:
Binding of hydrogen sulfide (H2S) to a zinc porphyrin complex and the stabilization of the related zinc hydrosulfido adduct are explored. High-resolution MALDI Fourier transform ion cyclotron resonance mass spectrometry (HR MALDI-FT-ICR) and 1H NMR experiments provide evidence that HS- coordination occurs at the zinc centre. The coordination of HS- occurs in a reversible manner and modulates fluorescence emission of a tetra(N-methylpyridyl)porphine zinc complex (TMPyPZn). The results highlight the potential of TMPyPZn and related systems for the implementation of fast and simple H2S sensors via a coordinative-based approach.
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