Issue 48, 2021

Two Co(ii) complexes containing pyridylbenzimidazole ligands as chemosensors for the sensing of levofloxacin, acetylacetone, and Ni2+ with high selectivity and sensitivity

Abstract

Two new Co(II) coordination compounds, namely [Co(L)0.5(DCDPE)]n (1) and [Co(L)(npth)]n·nH2O (2) (L = 1,1′-(1,6-hexanediyl)bis[2-(2-pyridyl)benzimidazole], H2DCDPE = 4,4′-dicarboxydiphenyl ether, H2npth = 3-nitrophthalic acid), were hydrothermally prepared and characterized. 1 presents a 2D layered 3,4L83 network, while 2 exhibits a dinuclear structure. Both complexes possess high pH stabilities in the range from 3 to 12. 1 and 2 can serve as fluorescence probes to sense acetylacetone (acac), levofloxacin (LEV), and Ni2+ with high quenching constants and low detection limits. The fluorescence sensing mechanisms of 1 and 2 are discussed in detail.

Graphical abstract: Two Co(ii) complexes containing pyridylbenzimidazole ligands as chemosensors for the sensing of levofloxacin, acetylacetone, and Ni2+ with high selectivity and sensitivity

Supplementary files

Article information

Article type
Paper
Submitted
21 9 2021
Accepted
03 11 2021
First published
03 11 2021

CrystEngComm, 2021,23, 8563-8571

Two Co(II) complexes containing pyridylbenzimidazole ligands as chemosensors for the sensing of levofloxacin, acetylacetone, and Ni2+ with high selectivity and sensitivity

M. Wen, L. Ren and G. Cui, CrystEngComm, 2021, 23, 8563 DOI: 10.1039/D1CE01271A

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