The Uncommon Channel‐Based Ln‐MOFs for Highly Selective Fe3+ Detection and Superior Rhodamine B Adsorption. Issue 45 (20th September 2016) - Xing, Shanghua
Abstract: Two new isostructural 3D lanthanide–organic frameworks [H2 N(Me)2 ] [Ln3 (OH)(bpt)3 (H2 O)3 ] (DMF)2 ⋅(H2 O)4 (1‐Ln ; Ln=Sm and Eu) with a 1D channel (25 Å) have been successfully assembled from the rare trinuclear [Ln3 (OH)(COO)9 ] clusters and biphenyl‐3, 4′, 5‐tricarboxylic acid (H3 bpt) and exhibit high stability towards water in the pH range 3–10. MOF1‐Eu is a promising luminescent probe for sensing Fe 3+ in aqueous solution and is also selective towards rhodamine B (RhB) with a superior adsorption capacity of 735 mg g −1, which is the highest among the reported Ln‐MOFs for RhB removal so far. Periodic DFT calculations further confirmed the selective adsorption of rhodamine B over other dyes. Abstract : A superior MOF ! Two new Ln–MOFs with an uncommon one‐dimensional channel (25 Å) have been synthesized and show high stability towards water in the pH range 3–10 (see figure). MOF1‐Eu is a promising luminescent probe for sensing Fe 3+ in aqueous solution and is also selective towards rhodamine B with a superior adsorption capacity.