Selective detection of olefins using a luminescent silver-functionalized metal organic framework, RPM3

Abstract A highly flexible, luminescent, three-dimensional metal organic framework (MOF), [Zn2(bpdc)2(bpee)]·2DMF (bpdc = 4,4′-biphenyldicarboxylate; bpee = 1,2-bipyridylethylene) also known as RPM3 was post functionalized with AgNO3 forming a π complex with the MOF’s conjugated linkers. The Ag+ functionalized MOF in its activated form exhibits structural rearrangements from the interaction of Ag+ ions monitored by Raman spectroscopy. The reversible binding of olefins such as ethylene (C2H4) and 1-hexene (C6H12) by the Ag+ functionalized MOF was monitored by fluorescence and Raman spectroscopy. These findings hold promise for the utilization of RPM3 for olefin/paraffin based separations and for a MOF based chemical sensor applicable for the detection of olefins.

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