A novel 4 4.6 6 5-connected metal-organic framework with strong fluorescent emission constructed by m-thioacetatebenzoic acid

Abstract

A novel uninodal 5-connected metal-organic framework (MOF), [Cd 2L 2(4,4′-bipy) 3/2(H 2O) 2] n (H 2L= m-thioacetatebenzoic acid and 4,4′-bipy=4,4′-bipyridine), was prepared under hydrothermal condition. It features an unusual brick-wall shape layer by 4,4′-bipy, which consists of right- and left-handed helical chains arrayed alternatively and finally expands by L 2– to a rare 5-connected nov (4 4.6 6) topology network. Photoluminescence study reveals that it displays intense structure-related fluorescent emission bands ( λ ex=355 nm) at 450 nm in the solid state at room temperature.