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Issue 13, 2020
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Syntheses, crystal structures, dye degradation and luminescence sensing properties of four coordination polymers

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Abstract

Four coordination polymers, namely, {[Co(cpnc)(bpbenz)]}n (1), {[Co(cpnc)(bide)2]}n (2), {[Co(cpnc)(bide) (H2O)1/2]·H2O}n (3), and {[Cd(cpnc)(bib)1/2(H2O)2]}n (4) (H2cpnc = 6-(4-carboxyphenyl)nicotinic acid, bpbenz = 1,4-bis(4-pyridyl)benzene, bide = 4,4′-bis(imidazolyl)diphenyl ether, and bib = 1,4-bis(1-imidazoly)benzene) have been solvothermally synthesized and characterized by powder X-ray diffraction, elemental analysis, and infrared spectroscopy. Structural analysis reveals that compound 1 consists of a 3D 3-fold interpenetrated framework with pcu topology. Compounds 2 and 3 have been synthesized by one-pot reactions. Compound 2 comprises 2D layers, while compound 3 comprises 1D chains. Compound 4 consists of 2D layers constructed from mixed ligands. In addition, the photocatalytic activities of 1–3 under UV light toward methyl orange (MO), rhodamine B (RB), methyl blue (MB), neutral red (NR), methylene blue (MEB), and safranine T (ST) with H2O2 are investigated in aqueous solutions. The results suggested that the photocatalytic efficiency of 1 for MO was 100% in one hour and that of 2 for ST was 90% in two hours; furthermore, the photocatalytic efficiencies of 3 for MO and ST were found to be 100% and 92% in one hour, respectively. The photoluminescence titration experiments demonstrate that 4 is an excellent multifunctional probe for metal ions (Fe3+ and Cu2+) and anions (Cr2O72− and CO32−).

Graphical abstract: Syntheses, crystal structures, dye degradation and luminescence sensing properties of four coordination polymers

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Supplementary files

Article information


Submitted
05 Feb 2020
Accepted
21 Feb 2020
First published
27 Feb 2020

CrystEngComm, 2020,22, 2327-2335
Article type
Paper

Syntheses, crystal structures, dye degradation and luminescence sensing properties of four coordination polymers

L. Qin, Q. Hu, Q. Zheng, Y. Dou, H. Yang and H. Zheng, CrystEngComm, 2020, 22, 2327
DOI: 10.1039/D0CE00175A

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