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Issue 17, 2020
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Reversible luminescent humidity chromism of organic–inorganic hybrid PEA2MnBr4 single crystals

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Abstract

Organic–inorganic hybrids have drawn great attention for gas sensors due to their high sensitivity, good selectivity and acceptable stability at room temperature. There are two main approaches by which organic–inorganic hybrids convert gas information to electric or optical signals (vapochromism). Here, we have reported a new organic–inorganic hybrid PEA2MnBr4 for humidity detection by luminescent visible chromism. PEA2MnBr4 single crystals were grown by the solution method and determined by single-crystal X-ray diffraction. Luminescent humidity chromism was found on PEA2MnBr4 from green emission at the water-desorption state to pink emission at the water-adsorption state within 18 s at a relative humidity of 38% RH. This obviously visible chromism was further used to check the water content in toluene with a low detection limit between 0.02 and 0.05 vol%.

Graphical abstract: Reversible luminescent humidity chromism of organic–inorganic hybrid PEA2MnBr4 single crystals

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Supplementary files

Article information


Submitted
12 Feb 2020
Accepted
27 Mar 2020
First published
27 Mar 2020

Dalton Trans., 2020,49, 5662-5668
Article type
Paper

Reversible luminescent humidity chromism of organic–inorganic hybrid PEA2MnBr4 single crystals

W. Gao, M. Leng, Z. Hu, J. Li, D. Li, H. Liu, L. Gao, G. Niu and J. Tang, Dalton Trans., 2020, 49, 5662
DOI: 10.1039/D0DT00514B

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