Two luminescent d10 metal coordination polymers assembled from a semirigid terpyridyl carboxylate ligand with high selective detecting of Cu2+, Cr2O72- and acetone

Using a carboxylic oligopyridine ligand, 4'-(4-carboxyphenyl)-4,2':6',4 ''- terpyridine (Hcptpy), and imidazole-4,5-dicarboxylic acid (H(3)idc), two metal(II)-cptpy compounds formulated as [Zn-2(cptpy)(4)](n)nH(2)O (1), [Zn-2(cptpy)(2)(Hidc)(H2O)(2)](n)nH(2)O (2) have been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction. Compound 1 shows a 2D +2D -> 3D supramolecular framework structure generated by two-fold interpenetrating 3-connected 2D framework (2D+2D -> 2D) with the sql topological net and the Schlafli symbol of {4(4).6(2)}. Compound 2 displays a 1D ladder chain structure. The luminescent properties of 1 and the ones immersed in various kinds of organic compounds and nitrate@DMF solutions have been investigated. Importantly, 1 shows highly selective and sensitive response to acetone and Cu2+ through luminescence quenching effects, making it a promising luminescent sensor for acetone molecule and Cu2+. Meaningwhile, compound 2 shows highly selective sensitivity for Cr2O72-.