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Issue 7, 2020
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A dual-responsive luminescent sensor based on a water-stable Cd(ii)-MOF for the highly selective and sensitive detection of acetylacetone and Cr2O72− in aqueous solutions

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Abstract

Two new water-stable cadmium(II)-metal organic frameworks (MOFs), namely [Cd2(L1)(1,4-NDC)2]n (1) and [Cd(L2)(1,4-NDC)]n (2) (L1 = 1,4-bis(benzimidazol-1-yl)-2-butylene, L2 = 1,4-bis(2-methylbenzimidazol-1-yl)-2-butylene and 1,4-H2NDC = 1,4-naphthalenedicarboxylic acid), were synthesized and characterized. 1 exhibits an unusual 3D framework with the Schläfli symbol of {42·5·62·7}{42·52·72}{42·53·62·73}2, and 2 is a classical sqc6 network. 1 and 2 display excellent pH and water stability, and the integrity of the frameworks was well maintained at different pH values (pH = 3–13) and after long-term water treatment. 1 is the first dual-function luminescent sensor for sensing acetylacetone and Cr2O72− in aqueous solutions with high sensitivity, selectivity and excellent recyclability. This material is an excellent dual-responsive recyclable luminescent sensor.

Graphical abstract: A dual-responsive luminescent sensor based on a water-stable Cd(ii)-MOF for the highly selective and sensitive detection of acetylacetone and Cr2O72− in aqueous solutions

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Supplementary files

Article information


Submitted
01 Oct 2019
Accepted
13 Jan 2020
First published
14 Jan 2020

CrystEngComm, 2020,22, 1166-1175
Article type
Paper

A dual-responsive luminescent sensor based on a water-stable Cd(II)-MOF for the highly selective and sensitive detection of acetylacetone and Cr2O72− in aqueous solutions

Y. Yang, Y. Li, D. Liu and G. Cui, CrystEngComm, 2020, 22, 1166
DOI: 10.1039/C9CE01546A

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