Alkali Phosphonate Metal–Organic Frameworks

Abstract

A new family of porous metal-organic frameworks (MOFs), namely alkali phosphonate MOFs, is reported. [Na₂ Cu(H₄ TPPA)]⋅(NH₂ (CH₃ )₂ )₂ (GTUB-1) was synthesized using the tetratopic 5,10,15,20-tetrakis[p-phenylphosphonic acid] porphyrin (H₈ -TPPA) linker with planar X-shaped geometrical core. GTUB-1 is composed of rectangular void channels with BET surface area of 697 m² g^-1 . GTUB-1 exhibits exceptional thermal stability. The toxicity analysis of the (H₈ -TPPA) linker indicates that it is well tolerated by an intestinal cell line, suggesting its suitability for creating phosphonate MOFs for biological applications.