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Issue 3, 2016
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Photochromic metal–organic frameworks for inkless and erasable printing

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Abstract

Inkless and erasable printing is the key solution towards a more sustainable paper industry, in terms of reducing paper wastages and the associated environmental hazards from waste paper processing. However, only a few cases have been reported in the literature where inkless printing has been tested in some practical systems. In an attempt to address this solution, we used photochromic metal–organic frameworks (MOFs) and tested their capability as inkless and erasable printing media. The printing was performed using sunlight as the light source on MOF-coated papers. The resulting printing had good resolution and stability, and was capable of being read both by the human eye and smart electronic devices; furthermore, the paper could be reused for several cycles without any significant loss in intensity. Interestingly, different coloured printing with a similar efficiency was achieved by varying the structure of the MOF.

Graphical abstract: Photochromic metal–organic frameworks for inkless and erasable printing

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Supplementary files

Article information


Submitted
20 Nov 2015
Accepted
21 Dec 2015
First published
21 Dec 2015

This article is Open Access
All publication charges for this article have been paid for by the Royal Society of Chemistry

Chem. Sci., 2016,7, 2195-2200
Article type
Edge Article
Author version available

Photochromic metal–organic frameworks for inkless and erasable printing

B. Garai, A. Mallick and R. Banerjee, Chem. Sci., 2016, 7, 2195
DOI: 10.1039/C5SC04450B

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