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Coordination polymers with salicylaldehyde ligand: Structural diversity, selective sorption and luminescent sensing property

Abstract

Five new coordination polymers [Cu(L)2]·2CH2Cl2·CH3OH (1), [Co(L)2]·CH2Cl2·2CH3OH (2), [Zn(L)2]·CH2Cl2·CH3OH (3), [Co(L)2] (4) and [CuI(HL)] (5) [HL = 2-hydroxy-4-(pyridin-4-yl)benzaldehyde] have been successfully synthesized. 1 and 2 are 2-fold interpenetrated three-dimensional (3D) frameworks with NbO topology and have large channels along with the crystallographic c axis. 3 and 4 have different two-dimensional (2D) layer structures while 5 is an infinite one-dimensional (1D) Cu-I chain decorated by HL. The diverse structures of 1 - 5 result from the different coordination geometry of metal centers and varied reaction conditions. Moreover, 1 and 2 possess high selectivity for adsorption of congo red (CR) among the tested dyes. In addition, 3 exhibits strong luminescence in the solid state as well as in the suspended methanol solution, and can be used as chemical sensor for detection of antibiotics. The emission of 3 can be quenched efficiently by trace amount of nitrofuran antibiotics (NFs) including nitrofurazone (NZF), nitrofurantoin (NFT) or furazolidone (FZD) with high selectivity and recyclability. The detection limits of 3 for NZF, NFT and FZD are 240, 246 and 414 ppb, respectively.

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Supplementary files

Publication details

The article was received on 22 Oct 2019, accepted on 20 Nov 2019 and first published on 21 Nov 2019


Article type: Paper
DOI: 10.1039/C9CE01675A
CrystEngComm, 2019, Accepted Manuscript

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    Coordination polymers with salicylaldehyde ligand: Structural diversity, selective sorption and luminescent sensing property

    Y. Liu, Y. Zhao, Z. Liu, X. Liu, X. Zhang and W. Sun, CrystEngComm, 2019, Accepted Manuscript , DOI: 10.1039/C9CE01675A

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