Water stable triazolyl phosphonate MOFs: steep water uptake and facile regeneration

Abstract

The new microporous cobalt triazolyl phosphonate MOF ³_α[Co₄L₃(μ₃-OH)(H₂O)₃](SO₄)_0.5·xH₂O (L²⁻ = 4-(4H-1,2,4-triazol-4-yl)-phenyl phosphonate) exhibits exciting features including high water stability, reversible hydration–dehydration, steep water uptake in repeated cycles at low water vapor pressures and reactivation at room temperature under mild evacuation.