Two mixed-ligands ternary cadmium(II) coordination polymers as fluorescent probes for the efficient detection of enrofloxacin/tetracyclines, Fe3+ and Cr2O72- in aqueous solution

abstract

Detecting antibiotics and heavy metal ions in water system are great crucial to protect environment. Two new ternary coordination polymers (CPs), [Cd(HBTC)(L)(1.5)](n) (1) and {[Cd(TBTA)(L)]center dot H2O}(n) (2) (H3BTC = 1,3,5-benzenetricarboxylic acid, H(2)TBTA = tetrabromoterephthalic acid, and L = 1,4-bis(benzimidazole-2-yl)butane) were prepared under the hydrothermal conditions. 1 possesses a 1D infinite chain which further extended into a 3D supramolecular network through O-H center dot center dot center dot O hydrogen bonding interactions, while 2 exhibits a 3D dia framework. 1 and 2 display excellent thermal and chemical stability. Moreover, Both CPs can be as the difunctional fluorescent sensors with high sensitivity, selectivity, and low limit of detection, which can detect enrofloxacin and Fe3+ (for 1), tetracycline and Cr2O72- ions (for 2) in aqueous solution through the fluorescence quenching effects process.

keywords

METAL-ORGANIC FRAMEWORK; SONOCHEMICAL SYNTHESIS; SELECTIVE DETECTION; CRYSTAL-STRUCTURE; HIGH-SENSITIVITY; WATER; IONS; ACETYLACETONE; BENZALDEHYDE; KINETICS

subject category

Chemistry

authors

Liu, Y; Wang, RT; Fu, LS; Dong, GY

our authors

acknowledgements

This project was supported by the National Science Foundation-Steel and Iron Foundation of Hebei Province (B2021209020) . This work was also developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020 & UIDP/50011/2020, financed by na-tional funds through the Foundation for Science and Technology/MCTES.

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