Issue 8, 2021

A family of luminescent metal–organic frameworks: synthesis, structure, and sensing studies

Abstract

Herein we report three novel luminescent metal–organic frameworks (MOFs) viz. [Co(bpeb)(hfipbb)0.5]n (LCo-1), [Zn(bpeb)2(hfipbb)]n (L-Zn) and [Co(bpeb)2(oba)]n (LCo-2) (where bpeb, hfipbb and oba represent (1,4-bis[2-(4-pyridyl)ethynyl]benzene), 4,4′-(hexafluoroisopropylidene)bis(benzoic acid) and 4,41-oxybis(benzoic acid) respectively), which were synthesized through the solvothermal method and characterized by SC-XRD. Compounds LCo-1 and L-Zn adopt two-dimensional layered structures while compound LCo-2 is a 3-dimensional framework. The observed dimensionality changes of LCo-1 and LCo-2 from 2D to 3D are due to the different bridging modes of carboxylic acid ligands. In LCo-1 and L-Zn, the hfipbb ligand coordinates to the metal center in a monodentate fashion {(κ1)-(κ1)-(κ1)-(κ1)-μ4}, and in LCo-2, dba coordinates in a {(κ1)-(κ1)-μ2} manner. Photoluminescence studies reveal that all three compounds show interesting sensing behavior towards nitroaromatic compounds.

Graphical abstract: A family of luminescent metal–organic frameworks: synthesis, structure, and sensing studies

Supplementary files

Article information

Article type
Paper
Submitted
16 Nov 2020
Accepted
24 Feb 2021
First published
25 Feb 2021
This article is Open Access
Creative Commons BY license

Mater. Adv., 2021,2, 2667-2675

A family of luminescent metal–organic frameworks: synthesis, structure, and sensing studies

H. Pulijala, T. N. Rao, F. Ahmed and Y. Prashanthi, Mater. Adv., 2021, 2, 2667 DOI: 10.1039/D0MA00889C

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