Hydrochromic molecular switches for water-jet rewritable paper

Lan Sheng, Minjie Li (), Shaoyin Zhu, Hao Li, Guan Xi, Yong-Gang Li, Yi Wang, Quanshun Li, Shaojun Liang, Ke Zhong and Sean Xiao-An Zhang ()
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Lan Sheng: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University
Minjie Li: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University
Shaoyin Zhu: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University
Hao Li: Northwestern University
Guan Xi: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University
Yong-Gang Li: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University
Yi Wang: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University
Quanshun Li: Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, College of Life Science, Jilin University
Shaojun Liang: Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, College of Life Science, Jilin University
Ke Zhong: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University
Sean Xiao-An Zhang: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University

Nature Communications, 2014, vol. 5, issue 1, 1-8

Abstract: Abstract The days of rewritable paper are coming, printers of the future will use water-jet paper. Although several kinds of rewritable paper have been reported, practical usage of them is rare. Herein, a new rewritable paper for ink-free printing is proposed and demonstrated successfully by using water as the sole trigger to switch hydrochromic dyes on solid media. Water-jet prints with various colours are achieved with a commercial desktop printer based on these hydrochromic rewritable papers. The prints can be erased and rewritten dozens of times with no significant loss in colour quality. This rewritable paper is promising in that it can serve an eco-friendly information display to meet the increasing global needs for environmental protection.

Date: 2014
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DOI: 10.1038/ncomms4044

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