Two Dual-Emission Zn(II)–Tb(III) Coordination Polymers Controlled by Metal–Ligand Ratios for Ratiometric Sensing of Malachite Green

Malachite green (MG) is an effective fungicide, but it is highly toxic, carcinogenic, and bioaccumulative, posing serious risks to food safety, ecological environments, and public health. Therefore, the accurate and sensitive detection of MG is essential. Herein, two ratiometric fluorescent sensors based on two bimetallic Zn(II)–Tb(III) coordination polymers (CPs) were developed for MG detection. The two Zn(II)–Tb(III) CPs were synthesized by controlling metal–ligand ratios, namely, [Zn2Tb2(DCA)10(phen)2] (1) and [Zn(phen)3][Tb3(DCA)11] (2) (DCA = 3,5-dichlorobenzoate and phen = 1,10-phenanthroline). They present as two distinct structures with a zero-dimensional (0D) tetranuclear Zn2Tb2 cluster structure for…

• NN
  National Natural Science Foundation of China

  Award: 21601105