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A multifunction photochromic metal-organic framework with Lewis acid sites for selective amines and anion sensing

Abstract

An effective strategy for designing and synthesizing multifunctional materials is incorporating functional organic moieties and metal ions or clusters using self-assembly. In this study, a multifunctional one-dimensional cationic metal-organic framework material based on Lewis acidic sites and redox ability of bipyridinium derivative has been successfully developed. Under UV-Vis irradiation, [Eu(dpbp)2(H2O)4]•Cl (1) (H2dpbp•PF6 = 1-(3,5-dicarboxyphenyl)-4,4′-bipyridinium hexafluorophosphate) exhibits interesting reversible photochromic behavior with color changes that are visible to naked eyes. Because of the presence of the Lewis acidic sites, 1 can be considered an excellent colorimetric sensor for the selective detection of amine vapors. At room temperature, 1 exhibits a strong red light emission, which endows it with good luminescent sensing ability for Cr2O72− anions. This work will motivate us to rationally design and synthesize more multifunctional materials based on bipyridinium derivatives and serve as practical multi-responsive materials to sensing light and chemicals.

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Supplementary files

Article information


Submitted
13 Apr 2020
Accepted
13 May 2020
First published
14 May 2020

CrystEngComm, 2020, Accepted Manuscript
Article type
Paper

A multifunction photochromic metal-organic framework with Lewis acid sites for selective amines and anion sensing

J. Liu, Q. Que, D. Liu, H. Suo, J. Liu and S. Xia, CrystEngComm, 2020, Accepted Manuscript , DOI: 10.1039/D0CE00560F

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