Formation of a metal–organic framework with high gas uptakes based upon amino-decorated polyhedral cages

Abstract

A new three-dimensional metal–organic framework 1 was solvothermally synthesized by 1,2,4-triazole and 2-aminoterephthalic acid, and structurally characterized. 1 features a three-dimensional structure with one-dimensional pores along the c axis of 6 × 6 Ų. Activated 1 exhibits an H₂ uptake capacity at 77 K. Importantly, it shows excellent enthalpy of CO₂ (35 kJ mol⁻¹) and methane (24 kJ mol⁻¹), compared to previous porous materials.