Issue 3, 2016

Photochromic metal–organic frameworks for inkless and erasable printing


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

Supplementary files

Article information

Article type
Edge Article
20 Nov 2015
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
Creative Commons BY license

Chem. Sci., 2016,7, 2195-2200

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

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Read more about how to correctly acknowledge RSC content.

Social activity