Water-Stable Metal-Organic Frameworks with Selective Sensing on Fe and Nitroaromatic Explosives, and Stimuli-Responsive Luminescence on Lanthanide Encapsulation.

Three water-stable luminescent MOFs [Zn(bptc)(NMP)(DMF)(HO)] (1-a), [Cd(bptc)(NMP)(DMF)(HO)] (1-b), and {[Zn(bptc)(DMA)(HO)]·(DMA)·HO} (2), possessing similar chemical components (M:L:Sol) and topology structures, were synthesized by solvents control. Their excellent sensing on iron(III) cation and nitroaromatic explosives (NACs) with great selectivity, sensitivity and a high K (4.54 × 10 for 1-b on PNP) were observed by quenching effects. Furthermore, Zn-MOFs exhibit interesting stimuli-responsive luminescence enhancement after the encapsulation of a series of IIIB cations stimulated different luminescent emitting and intensity enhancement through host-guest processes of the pores in MOFs, especially for two distinct responses of Zn-MOF on a Tb cation.