Abstract
We report the solvothermal synthesis and fluorescent property of a novel luminescent coordination polymer (LCP) by choosing a new coplanar ligand, 2-(4-(3,5-dicarboxylphenoxy)phenyl) benzimidazole-5-carboylic acid (L). Single-crystal X-ray diffraction analysis reveals that the obtained LCP is formulated as {Cd(L2}n (1) and features a 2D uninodal 4-connected sql/Shubnikov tetragonal plane net with {44.62} topology. Fluorescence experiments suggest that 1 could work as highly sensitive and selective probe for both Cr2O72– and 2,4,6-trinitrophenol in water medium, resisting interferences from a variety of competitive anions or nitroaromatic compounds. The limits of detection for Cr2O72– and TNP in aqueous solutions were calculated to be 0.128 and 0.089 μM, respectively. Just by a simple method, the fluorescent sensing ability of 1 could be regenerated.
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