Abstract

A Cd(II) coordination polymer (1), {[Cd2(Ccbp)2(dca)Cl·3H2O]·4H2O} Ccbp− = 4-carboxy-1-(3-carboxybenzyl)pyridin-1-ium and dca− = dicyanamide, has been synthesized via a hydrothermal reaction and fully characterized by single-crystal X-ray structural analysis, FTIR spectroscopy, powder X-ray diffraction, and thermogravimetric analysis. Complex 1 has a 2D network structure with uncoordinated functional groups. Its solid-state luminescence properties were measured at room temperature. Complex 1 exhibited a high sensitivity for Fe3+ in DMF solutions of mixed metal ions. In addition, the temperature-dependent luminescence properties of 1 have been investigated and show that the complex acts as a luminescent thermometer over a temperature range from 10 to 90 K.

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