A chiral 8-fold interpenetrating srs-type metal-organic framework FIR-28 (FIR denotes Fujian Institute of Research) exhibits a surface area of 1029 m(2)/g and high C3H8/CH4 separation capacity in excess of 154 and displays strong powder second-harmonic-generation efficiency, with more than half over potassium dihydrogen phosphate powder. Moreover, the luminescence properties of FIR-28 are dependent on the solvent guests.