SCHEDULED MAINTENANCE
Coordination-driven assembly of a 3d–4f heterometallic organic framework with 1D Cu4I4 and Eu-based chains: syntheses, structures and various properties†
*a
Xiuling
Zhang
c
and
Abstract
A three-dimensional porous 3d–4f heterometallic organic framework, namely, {[Eu3(Cu4I4)3(INA)9(DMF)4]·3DMF}n (YNU-2), was successfully prepared under solvothermal conditions. There are two different one-dimensional metal chains in the structure, namely, Cu4I4 and EuIII-based chains, resulting in an excellent stability of the prepared sample. A N2 sorption isotherm at 77 K revealed that the activated sample exhibits a Brunauer–Emmett–Teller surface area of 371 m2 g−1, while, YNU-2 can adsorb obviously higher CO2 amounts than CH4 at 273 K and 298 K under 1 atm because of the stronger interaction force between CO2 and the porous skeleton. Furthermore, YNU-2 is highly efficient heterogeneous catalyst for chemical fixation of the CO2 and epoxides into cyclic carbonates with a preferable recyclability. Taking into account its excellent stability, the prepared sample can be used to construct an electrochemical adapter sensor for detecting cocaine with a detection limit of 0.27 pg mL−1 in the wide range of 0.001–0.5 ng mL−1.
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