Two Nickel(II) Coordination Polymers Based on Tri( p ‐carboxyphenyl) phosphane Oxide with Highly Selectively and Sensitively Detection of Acetone

Two nickel(II) coordination polymers, namely, {[Ni 1/2 (TPO) 1/3 (bib) 1/2 (H 2 O)] · H 2 O} n ( 1 ), and [Ni(HTPO)(bpy)(H 2 O) 2 ] n ( 2 ), were assembled from tripodal ligand of tripodal tri( p ‐carboxyphenyl) phosphane oxide (H 3 TPO) and two N‐donors [bib = 1,4‐bis(imidazolyl)benzene, and bpy = 4,4′‐bipyridine]. Their structures were determined by single‐crystal X‐ray diffraction analysis and further characterized by elemental analysis, IR spectra, powder X‐ray diffraction (PXRD), and thermogravimetric analysis (TGA). Structural analysis reveals that complex 1 is an interestingly 3D (3,4)‐connected {10 3 } 2 {10 6 } 3 net, whereas complex 2 is a 1D polymeric chain, which was further expanded into a 3D supramolecular structure through hydrogen bonds. Luminescent sensing measurements show two nickel CPs can selectively and sensitively detect for acetone from normal solvents (DMF, DMA, DMSO, MeOH, EtOH, CH 3 CN, H 2 O, and N‐butanol).