01611nas a2200169   4500008004100000022001400041245007600055210006900131260011000200300001400310490000600324520094400330100001801274700002001292700002001312856010901332       2016                        eng d  a2041-652000aPhotochromic metal-organic frameworks for inkless and erasable printing0 aPhotochromic metalorganic frameworks for inkless and erasable pr  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcDEC  a2195-22000 v73 a<p>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.</p>1 aGarai, Bikash1 aMallick, Arijit1 aBanerjee, Rahul  uhttps://library.ncl.res.in/content/photochromic-metal-organic-frameworks-inkless-and-erasable-printing-0