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A novel multifunction photochromic metal–organic framework for rapid ultraviolet light detection, amine-selective sensing and inkless and erasable prints

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Abstract

Herein, a multifunctional photochromic two-dimensional metal–organic framework (PMOF), [Zn(bcbpy)0.5(pma)0.5(H2O)]·3H2O (1), was synthesized (H2bcbpy·2Cl = 1,1′-bis(3-carboxylatobenzyl)-(4,4′-bipyridinium) dichloride, H4pma = pyromellitic acid). It showed an efficient ultraviolet light detection ability with an obvious color change from colorless to blue and fast response to an ultraviolet intensity of as low as 0.001 mW cm−2 in the narrow-band UV region. Furthermore, based on the Lewis acidic site and redox ability of the bipyridinium ligand, compound 1 showed amine-selective sensing upon contact with different amine vapors (NH3, ethylamine, n-propylamine, n-butylamine, diethylamine and triethylamine) and was also deposited on paper for use as portable test strips. The finely powdered sample could also be deposited on paper by coating it with a solution of ethanol, and the paper was used as an inkless and erasable print medium, which could be reprinted at least five times.

Graphical abstract: A novel multifunction photochromic metal–organic framework for rapid ultraviolet light detection, amine-selective sensing and inkless and erasable prints

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Publication details

The article was received on 17 Aug 2019, accepted on 25 Sep 2019 and first published on 26 Sep 2019


Article type: Research Article
DOI: 10.1039/C9QI01037H
Inorg. Chem. Front., 2019, Advance Article

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    A novel multifunction photochromic metal–organic framework for rapid ultraviolet light detection, amine-selective sensing and inkless and erasable prints

    L. Li, Z. Tu, Y. Hua, X. Li, H. Wang and H. Zhang, Inorg. Chem. Front., 2019, Advance Article , DOI: 10.1039/C9QI01037H

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