Synthesis, crystal structure, and fluorescence properties of two 1-D chain polymers extended by a semi-rigid bis(triazole) ligand

<p>Two 1-D luminescent metal-organic frameworks with identical structures, {[Mn(BBPTZ)<sub>2</sub>(MeCN)<sub>2</sub>]·(ClO<sub>4</sub>)<sub>2</sub>}<sub>n</sub> (<b>1</b>) and {[Zn(BBPTZ)<sub>2</sub>(MeCN)<sub>2</sub>]·(MeCN)<sub>2</sub>·(ClO<sub>4</sub>)<sub>2</sub>}<sub>n</sub> (<b>2</b>), have been synthesized under solvent diffusion evaporation and characterized by elemental analyses, thermal analyses and single-crystal X-ray diffraction. Both complexes crystallize in the monoclinic system, space group C2/c with six-coordinate M(II). Thermal decompositions of the complexes have been studied using thermogravimetric analyses (TGA). The complexes exhibit a significant fluorescence quenching effect to Fe<sup>3+</sup> in acetonitrile solution. The LoDs (Limit of Detection) of the complexes to Fe<sup>3+</sup> are 2.59 × 10<sup>−8</sup> M and 1.57 × 10<sup>−8</sup> M for <b>1</b> and <b>2</b>, respectively. The complexes could be applied to efficient chemosensor for Fe<sup>3+</sup> detection.</p>