Chemical Communications · 2021 · 23 citations · 24 references
A water-stable, porphyrin-based metal-organic framework (MOF) produces a distinct colour change in response to acids' p<i>K</i><sub>a</sub> and concentrations. This colour change is associated with the protonation of the N-atoms within the porphyrin ligand present in the MOF structure. As a proof-of-concept, we demonstrate the use of this MOF for detecting traces of different acidic pesticides present in water samples spontaneously.
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