Two Cd(II)-based metal-organic frameworks as difunctional fluorescence sensors to detect enrofloxacin and Fe3+ br

abstract

Two ternary Cd(II) metal-organic frameworks [Cd4(L)2(2,6-NDA)4 center dot 5H2O]n (1) and [Cd(L)0.5(1,8-NDA)center dot 0.75H2O]n (2) (L = 1,4-bis(1-(piperidin-4-ylmethyl)-1H-benzo[d]imidazole-2-yl)butane, 2,6-H2NDA = 2,6-naphthalenedicarboxylic acid, 1,8-H2NDA = 1,8-naphthalenedicarboxylic acid) were synthesized based on the L and two isomeric naphthalene dicarboxylic acids. 1 and 2 exhibit a 3D 4,4T11 and a 2D 3,4L13 network, respectively. Both 1 and 2 show remarkable thermal stability and can be used as difunctional fluorescence sensors for Fe3+ and enrofloxacin via a fluorescence quenching process with high sensitivity and selectivity. In addition, the fluorescence sensing mechanism was discussed in detail.

keywords

OXIDATIVE STRESS; MOFS; LUMINESCENCE; INDUCTION; WATER

subject category

Chemistry

authors

Wen, MY; Fu, LS; Dong, GY

our authors

acknowledgements

The project supported by Hebei Natural Science Foundation (B2021209020) . This work was also developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020 & UIDP/50011/2020, fi nanced by national funds through the Foundation for Science and Technology/MCTES.

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