Issue 32, 2022

A series of bis-pyridyl-bis-amide-modulated metal–organic frameworks: formation, transformation and selectivity for the efficient detection of multiple analytes

Abstract

The designing of luminescent metal–organic frameworks (LMOFs) as sensors for the detection of molecules and ions constitutes an active area of research. Four different three-dimensional (3D) unusual LMOFs, namely, {[Zn(3-pda)(TA)]·H2O}n (1), {[Zn(4-pda)(TA)]·2H2O}n (2), [Cd(3-pda)(TA)]n (3), and {[Cd2(4-pda)2(TA)2]·(4-fpia)·H2O}n (4) (3-pda = 1,4-bis(3-pyridylcarboxylamide)benzene, 4-pda = 1,4-bis(4-pyridylcarboxylamide)benzene, 4-fpia = N-(4-formylamino-phenyl)-isonicotinamide, and TA = terephthalic acid) were successfully synthesized by a hydrothermal method and characterized by single-crystal X-ray diffraction. Under solvothermal conditions, a structurally transformational 3D 3-fold interpenetrated porous MOF, [Cd2(4-pda)2(TA)2(DMF)]n (4a), was obtained, which could be further transformed to isostructural [Cu2(4-pda)2(TA)2(DMF)]n (4b) by single-crystal to single-crystal (SCSC) transformation. The effect of N-donor ligands, metal ions and solvents on the structure of MOFs is discussed in detail. A series of luminescence recognition tests proved that complexes 1–4 can be used as luminescent sensors for detecting certain metal cations, oxyanions, and toxic organic solvents in an aqueous environment. Furthermore, the luminescence quenching mechanism and structure–function relationship were studied systematically.

Graphical abstract: A series of bis-pyridyl-bis-amide-modulated metal–organic frameworks: formation, transformation and selectivity for the efficient detection of multiple analytes

Supplementary files

Article information

Article type
Paper
Submitted
04 Jul 2022
Accepted
19 Jul 2022
First published
19 Jul 2022

CrystEngComm, 2022,24, 5767-5782

A series of bis-pyridyl-bis-amide-modulated metal–organic frameworks: formation, transformation and selectivity for the efficient detection of multiple analytes

X. Zhang, Y. Liu, Y. Liu, L. Xiao, J. Cui, H. Xiang, J. Luan and W. Li, CrystEngComm, 2022, 24, 5767 DOI: 10.1039/D2CE00915C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements