Abstract
Rewritable paper has recently become prevalent in both academic research and marketplace due to the potential environmental advantages, including forest conservation, pollution reduction, energy saving and resource sustainability. However, its real-life applications are limited by a lack of effective strategy to realize multicolour and water-jet printing on rewritable paper with long legible image-lasting times. Herein, we report an effective strategy to construct rewritable paper based on colour or luminescence switching induced by dynamic metal–ligand coordination. This type of rewritable paper can be conveniently utilized for multicolour water-jet printing by using aqueous solutions containing different metal salts as ink. In addition, the printed images on the water-jet rewritable paper can be retained for a long time (> 6 months), which shows great progress compared to previous work. We believe that this type of rewritable paper could be considered as a prototype for multicolour water-jet printing to meet the practical needs.
Highlights
Rewritable paper has recently become prevalent in both academic research and marketplace due to the potential environmental advantages, including forest conservation, pollution reduction, energy saving and resource sustainability
We report the coating of a polymer film containing terpyridine ligand on filter paper on which multicolour images can be repeatedly painted using different metal salt aqueous solutions (MSAS) as the inks, which can coordinate with ligand
Our results demonstrate that the application of dynamic metal–ligand coordination in the preparation of rewritable paper would be a promising approach for the achievement of multicolour water-jet printing with long retention time
Summary
Rewritable paper has recently become prevalent in both academic research and marketplace due to the potential environmental advantages, including forest conservation, pollution reduction, energy saving and resource sustainability. We report an effective strategy to construct rewritable paper based on colour or luminescence switching induced by dynamic metal–ligand coordination This type of rewritable paper can be conveniently utilized for multicolour water-jet printing by using aqueous solutions containing different metal salts as ink. The printed images on the water-jet rewritable paper can be retained for a long time (> 6 months), which shows great progress compared to previous work. The printed pictures can be retained for over 6 months and erased conveniently by tetrabutylammonium fluoride (TBAF) to dissociate the metal–ligand coordination bond Another type of rewritable paper, which can record information by using pure water as the ink, has been fabricated by incorporating waterresponsive luminescent zinc complex into the imaging layer. Our results demonstrate that the application of dynamic metal–ligand coordination in the preparation of rewritable paper would be a promising approach for the achievement of multicolour water-jet printing with long retention time
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