Abstract
Complexes have enormous potential in many fields such as fluorescence sensing due to their structural adjustability and designability. Herein, two novel complexes, namely, {[Zn(HPA)(LBTX)].H2O}n (1) and {[Cd(HPA)(LBTX)].H2O}n (2) (LBTX = 4,4′-bis (1H-1,2,4-triazol-1-yl) methyl-1,1′-biphenyl, H2HPA = Homophthalic) were produced using solvothermal method. Zn2+ ions are connected with carboxyl groups of H2HPA to form an infinitely extended 1D chain, which is further connected by the LBTX ligand to form a 2D network structure. There are weak hydrogen bond networks in the structure of complex 1, which are accumulated 3D structures. Complex 2 and Complex 1 have similar properties in structure. Both the two luminescent complexes exhibit varying degrees of recognition for Cr2O72− / CrO42− and Fe3+, as well as ODZ / NFZ antibiotics. In the presence of various interfering substances such as antibiotics and metal ions, it exhibits good sensitivity and high selectivity towards the substrates. In addition, the fitting curve intuitively shows the selective detection effect of two complexes on CrO42− / Cr2O72− / Fe3+, ODZ / NFZ. This work provides a reference for exploring the potential applications of luminescent complexes in the field of chemical sensing.
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