Metal–Organic Frameworks Constructed from d‑Camphor Acid: Bifunctional Properties Related to Luminescence Sensing and Liquid-Phase Separation

Three metal–organic frameworks (MOFs) [M2(d-cam)2(bimb)2]n·3.5nH2O (M = Mn for 1, Co for 2) and [Cd8(d-cam)8(bimb)4]n (3) (d-H2cam = d-camphor acid, bimb =
4,4′-bis­(1-imidazolyl)­biphenyl), solvothermally synthesized,
exhibit structural diversity. The charming aspect of these frameworks
is that compound 3 is the very first MOF-based sensor
for quantitatively detecting three different types of analytes (metal
ions, aromatic molecules, and pesticides). And also, both compounds 2 and 3 show rapid uptake and ready regeneration
for methyl orange (MO) and can selectively bind MO over methylene
blue (MB) with high MO/MB separation ratio.