Issue 43, 2021

A multi-functional two-dimensional Zn(ii)-organic framework for selective carbon dioxide adsorption, sensing of nitrobenzene and Cr2O72−

Abstract

A novel two-dimensional coordination polymer with a negatively charged framework named {[(CH3)2NH2][Zn2(L)2]·DMF}n (1) was solvothermally synthesized via the assembly of Zn(II) ions with the organic ligand H3L (2-(3,5-dicarboxylphenyl)-6-carboxyl-benzimidazole). 1 was characterized by IR spectroscopy, thermogravimetry, single-crystal, and powder X-ray diffraction methods. 1 possesses a 1D rectangle channel decorated by abundant uncoordinated imidazole N atoms and carboxylate O atoms, and is a better CO2 adsorbent and promising CO2/CH4 selective material, suggesting potential application in gas separation. Moreover, 1 can also serve as a multi-responsive sensing material for detecting nitrobenzene (NB) and Cr2O72−via a luminescence quenching effect with a low detection limit, and the mechanisms of the quenching effect and sensing properties of 1 are discussed in detail.

Graphical abstract: A multi-functional two-dimensional Zn(ii)-organic framework for selective carbon dioxide adsorption, sensing of nitrobenzene and Cr2O72−

Supplementary files

Article information

Article type
Paper
Submitted
15 8 2021
Accepted
09 9 2021
First published
15 9 2021

CrystEngComm, 2021,23, 7643-7649

A multi-functional two-dimensional Zn(II)-organic framework for selective carbon dioxide adsorption, sensing of nitrobenzene and Cr2O72−

Q. Wu, X. Yang, Z. Ding, X. Meng, W. Zhang, Y. Yan, G. Yang and Y. Wang, CrystEngComm, 2021, 23, 7643 DOI: 10.1039/D1CE01095F

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