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Dual-responsive luminescent sensor based on water-stable Cd(II)-MOF for highly selective and sensitive detection of acetylacetone and Cr2O72- in aqueous solution

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 a 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 stability and water stability, and the integrity of the frameworks was well maintained after different pH (pH = 3~13) and long term water treatment. 1 is the seldom dual-function luminescent sensor for sensing acetylacetone and Cr2O72- in aqueous solution with high sensitivity, selectivity and excellent recyclable behaviors. This material is an excellent dual-responsive recyclable luminescence sensor.

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Supplementary files

Article information


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

CrystEngComm, 2020, Accepted Manuscript
Article type
Paper

Dual-responsive luminescent sensor based on water-stable Cd(II)-MOF for highly selective and sensitive detection of acetylacetone and Cr2O72- in aqueous solution

Y. Yang, Y. Li, D. Liu and G. H. Cui, CrystEngComm, 2020, Accepted Manuscript , DOI: 10.1039/C9CE01546A

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