Chemically reversible binding of H2S to a zinc porphyrin complex: towards implementation of a reversible sensor via a "coordinative-based approach"

Maria Strianese; Marina Lamberti; Claudio Pellecchia

doi:10.1039/c6dt04753j

Chemically reversible binding of H₂S to a zinc porphyrin complex: towards implementation of a reversible sensor via a "coordinative-based approach"

Dalton Trans. 2017 Feb 14;46(6):1872-1877. doi: 10.1039/c6dt04753j.

Authors

Maria Strianese¹, Marina Lamberti², Claudio Pellecchia¹

Affiliations

¹ Dipartimento 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.
² Dipartimento di Fisica "E. Caianiello", Università degli Studi di Salerno Via Giovanni Paolo II, 132 84084 Fisciano (SA), Italy.

PMID: 28102393
DOI: 10.1039/c6dt04753j

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.